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how do i mount a filesystem using python
pbadly mounting and unmounting belongs to the things that are highly system dependent and since they arep ul lirarely used andli lican affect system stabilityli ul pthere is no solution that is portable available since that i agree with ferdinand beyer that it is unlikely a general python solution is existingp
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whenever handlers executed need to push message to zeromq stays hanging
blockquote pis this real way to push to zeromq whenever the handler is executedp blockquote pno your code calls zmqcontext every time the request handler is invoked this is bad it should be called exactly once usually at the very beginning of your process perhaps in some kind of init handler you can safely share the context instance among any number of threadsp psame thing with socket creation and binding this should be done once at startup you must be more careful with the socket if all your handlers application request etc are executing in the same thread each time the handler is called then you can use the same socketp panother problem is the way your a sending to a push socket as described in a hrefhttpapizeromqorg323azmqsocket relnofollowhttpapizeromqorg32zmqsocketa a send to a push socket may very well block in certain situations and you probably want to avoid that use the zmqpoller with the pollout flag and a 0 timeout to determine if the send would block if not then send right away if so you have to decide if you want to just drop the message or store it in your application to try again laterp
0
how should i append to small filelike objects in mongodb
pyou could just store the data as binary or text in a mongodb collection but youd have two problemsp ol lipyoud have to implement as much of the python file protocol as your other code expects to have implementedpli lipwhen you append to the file the document would grow in mongodb and possibly need to be moved on disk to a location with enough space to hold the larger document moving documents is expensivepli ol pgo with gridfs the documentation discourages you from using for emstaticem files but for your case its perfect because pymongo has done the work for you of implementing pythons file protocol for mongodb data to append to a gridfs file you must read it save a new version with the additional data and delete the previous version but this isnt much more expensive than moving a grown document anywayp
0
finding the last occurrence of an item in a list python
precodedef positionlastx l try return maxi for ie in enumeratel if ex except return none codepre
0
python error ioerror errno2 bad interpretation of file or directory
pyou can try replace codecode to codecodep
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how to open readwrite file and recreate the file
pif you want quick and structured files use pythons csv libraryp precodeimport csv mainheaders state chinese compounddata with openlanguages1csv r as csvfile csvreader csvdictreadercsvfile for row in csvreader compounddataappendrow printcompounddata with openlanguages2csv r as csvfile csvreader csvdictreadercsvfile for row in csvreader compounddataappendrow printcompounddata codepre poutputp precodestate ca chinese 10 state vt chinese 20 state ca chinese 10 state vt chinese 20 state ca vietnamese 01 state vt vietnamese 15 codepre ponce you have your data you can rewrite to csv file or whatever file you want and apply formattingp
0
triangular numbers using loops python
pcould be something like this p precodedef alltrianglenumbersn for i in range1 n 1 printn 0 triangle 1formati i 2 i2 alltrianglenumbers10 codepre
0
distinguishing 2 lines in a file read
puse a hrefhttpsdocspythonorg3libraryjsonhtml relnofollowthe codejsoncode modulea to parse jsonp pstrongpython 3 codestrongp precodeimport json import subprocess with subprocesspopencat tmpfoojson stdoutsubprocesspipe as f j fstdoutread o jsonloadsjdecodeutf8 printo printodef1val1 printodef29val1 codepre pstrongoutputstrongp precodedef1 val1 316 val2 10 def2 9 val1 201 val2 22 316 201 codepre pstrongeditstrongp pfor python 2 use this insteadp precodeimport json import subprocess f subprocesspopencat tmpfoojson stdoutsubprocesspipe j fstdoutread o jsonloadsjdecodeutf8 print o print odef1val1 print odef29val1 codepre
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python number guessing game
pyou just have to define your main function like thisp precodedef main global randomnumber print randomnumber randomrandrange1 1000 number inputi have a number between 1 and 1000 can you guess my number please type your first guess guessnumber codepre pand everything will be perfect hope this helpsp
0
why is my python programme running correctly in my virtual environment despite not having the packages installed in that environment
pyou have installed prettytables globally when you create a virtual environment it will include the globally installed packages hence the reason why your program is running p
0
python programming socket stream to functions
pa hrefhttpstackoverflowcomquestions2483041whatisthedifferencebetweenforkandthreadthisa should give you a brief idea of threads vs forkp pcreation of threads require lot less overhead i would go with the thread architecture each of the three thread functions will be supplied with the respective queue on which it needs to do the realtime computation use of synchronization and mutual exclusion mechanisms will prevent unexpected behaviors you can also use valgrind with drd for debugging your multithreaded programp
0
enabledhcp returns 81 unable to configure dhcp service
pit looks like you are using windows 7 make sure to run the script as administratorp
0
adding up number in a list with every 3 number
pthis will skip the remaining numbers that cant fit into a group of threep precodegtgtgt def sumthreeiterable iterable iteriterable while true yield nextiterable nextiterable nextiterable gtgtgt mylist 0 1 0 2 0 4 99 1 gtgtgt listsumthreemylist gtgtgt 1 6 codepre
0
in python how do you create a 2d list from a file and assign a type to each item in each sublist
pthe main problem you have is that codefreadlinescode reads everything as a string you can then map each item in your sublist through a type checker like thisp precodedef typechecks try return ints except valueerror try return floats except return s codepre pwill try to explicitly cast your parameter as an int then a float then just leave it as is it is this order because all things that can be cast as a int can also be cast as a float but not the other way around so you want to check for the codeintcode first ie code1231code will raise an error for codeint1231code but not codefloat1231codep pyou can then append the mapped list like thisp precodefor line in lines mylistappendlistmaptypechecklinestripsplit codepre pand your values that can be converted to floats and int will be convertedp pexamplep precodegtgtgt def typechecks try return ints except valueerror try return floats except return s gtgtgt l afghanistan 6475000 25500100 albania 287480 2821977 algeria 23817400 38700000 american samoa 1990 55519 andorra 4680 76246 gtgtgt for i in l printlistmaptypechecki afghanistan 6475000 25500100 albania 287480 2821977 algeria 23817400 38700000 'american samoa', 199.0, 55519] ['andorra', 468.0, 76246] </code></pre>
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removing a variable from a list of comma seperated email ids
psplit it out by comma then join back them back on comma minus the excluded onep precodemsgto joinemail for email in msgtosplit if email username1companycom codepre pyou could also generalise it to have a list of do not mails egp precodedonotmail username1companynamecom username2anothercompanycom def emailbody subject tonone msg mimetexts body msgcontenttype texthtml msgfrom serviceaccountcompanycom msgto joinemail for email in settodifferencedonotmail codepre
0
table equating old and new python string formatting
pid say yes there is from the a hrefhttpsdocspythonorg2librarystringhtmlformatexamples relnofollowpython documentationap blockquote pemthis section contains examples of the new format syntax and comparison with the old formattingemp blockquote pheres a summary of whats in therep precode old new arg result s s foo foo r r foo foo c c x x f f 314 3140000 f f 314 3140000 f f 314 3140000 d d 42 42 x x 42 2a o `{:o}` | `42` | `52` | | `∅` | `{:b}` | `42` | `101010` | </code></pre> <p>i guess the upper case equivalent work the same. </p> <p>to prepend the digital base:</p> <pre><code>| old | new | arg | result | | ----- | ------- | ------- | -------- | | `%#d` | `{:#d}` | `42` | `42` | | `%#x` | `{:#x}` | `42` | `0x2a` | | `%#o` | `{:#o}` | `42` | `052` | | `∅` | `{:#b}` | `42` | `0b101010` | </code></pre> <p>and to convert the number to scientific notation:</p> <pre><code>| old | new | arg | result | | ----- | ------- | ------- | -------- | | `%e` | `{:e}` | `0.00314` | 3.140000e-03 | </code></pre> <p>for the alignment, there is:</p> <pre><code>| old | new | arg | result | | ----- | ------- | ------- | -------- | | `%-12s` | `{:&lt;12}` | `meaw` | ` meaw` | | `%+12s` | `{:&gt;12}` | `meaw` | `meaw ` | </code></pre> <p>for filling:</p> <pre><code>| old | new | arg | result | | ----- | ------- | ------- | -------- | | `%012d` | `{:&gt;012}` | `42` | `000000000042` | </code></pre> <p>as you can see, most of the base symbols are the same between old format and new format. the main difference, is that the new format is a well defined language matching the following grammar:</p> <pre><code>format_spec ::= [[fill]align][sign][#][0][width][.precision][type] </code></pre> <p>whereas the old format was a bit more voodoo.</p>
0
quicksort first element as pivot quick code check
pmodified your code as belowp precodedef quicksortalist l r if l lt r swap l1 pivot alistl for run in range l1r if pivot gt alistrun alistswapalistrun alistrunalistswap swap1 alistlalistswap1 alistswap1alistl quicksortalist l swap1 quicksortalist swap r return alist test 46372 t quicksorttest0lentest print t codepre
0
trouble comparing elements of sets python
pyou can use a combination of intersection and set to solve this problemp precodegtgtgt s1 set123 gtgtgt s2 set345 gtgtgt s3 set678 gtgtgt lens1intersections2 1 gtgtgt lens1intersections3 0 codepre pso basically write an if statement to check the length of the intersection of the two sets if length is greater than 0 make newlist equal to your second setp
0
python keyerror with formgetfirst
ptry codeltdtmlvar requestjobidgtcodep
0
django 14 with apache2
pperhaps you should change your test like this use a variable already instantiated for testing in the if statement your testing for a variable codefalsecode and codenonecode is evaluating as codefalsecode in that testp precodemodelfound false try applabel modelname settingsauthprofilemodulesplit profile modelsgetmodelapplabel modelname modelfound true except importerror improperlyconfigured raise siteprofilenotavailable if not modelfound raise siteprofilenotavailable codepre
0
error unknown file type hpp in distutils extension module
pare you sure header files are supposed to go in the sources argument and not in another like headersp
0
scraping product names using beautifulsoup
pyour code is correct but the problem is that the div which includes the product name is dynamically generated via javascript in order to be able to successfully parse this element you should mind using a hrefhttpseleniumhqorg relnofollowseleniuma or a similar tool that will allow you to parse the webpage after all the dom has been fully loadedp
0
list of tuples from a all b to b all a
pa sorting version for funp precodeimport itertools import operator function to get first element of a tuple fst operatoritemgetter0 def invertitems b a pairs sorted by b pairs sortedb a for a bs in items for b in bs b b a groups groups itertoolsgroupbypairs keyfst b a groups return b a for a in items for b items in groups printinvert a1 b1 b2 b3 a2 b2 a3 b1 b2 codepre
0
script to move messages from one imap server to another
pim not sure what volume of messages youre dealing with but you could extract the codemessageidcode from each one and use that to find out if its a duplicate either generate a list of ids already on the target server each time you prepare to move messages or add them to a simple database as they are archivedp pyou could narrow things down by an additional message property like codedatecode if the lookups are too expensive then drop the older lists when you no longer need themp
0
access a node of string label with an int part of the string
pnetworkx keeps the nodes and edges of the graph in a dictionary structure where the node is the key and its data is an associated dictionary structure apparently when you read the pajek file format given your example file the dictionnary is this onep precodegtgtgt g nxreadpajektestpj gtgtgt pprintgnode uauthor1 id u123 uauthor2 id u456 uauthor3 id u789 uauthor4 id u111 uauthor5 id u222 uauthor6 id u333 codepre pwhich means node codeuauthor1code is associated with data codeid u123codep pnow i dont know in the pajek file format which field is supposed to be the actual node maybe its not implemented correctly in networkx but if you reverse names and ids in your file you get what you wantp precodenetwork vertices 6 author1 123 author2 456 author3 789 author4 111 author5 222 author6 333 edges 123 333 333 789 789 222 codepre pandp precodegtgtgt g nxreadpajektestpj gtgtgt pprintgnode u111 id uauthor4 u123 id uauthor1 u222 id uauthor5 u333 id uauthor6 u456 id uauthor2 u789 id uauthor3 &gt;&gt;&gt; g.node['111'] {'id': u'author4'} </code></pre> <p>moreover, the node id is a string, not an integer. if you need an integer, you may need to relabel the nodes.</p>
0
management of photos for django applications
pwhat about using the django filebrowser and reference your photos from the folders you upload to a hrefhttpcodegooglecompdjangofilebrowser relnofollowdjangofilebrowserap
0
python code to play an audio file
pthis will work if the alarm noise file is in the same directory as the python file itself i do warn you though this is very clunky and the sound file is opened separately but nevertheless it does what you requiredp precodeimport os time while true osstartfilefilename of sound replace with the appropriate file name make sure the alarm sound is in the same directory as the python file else this will not work timesleepdelay in seconds this is how long the delay is between each time it opens the sound codepre
0
cant find a string within a string only one char
pthis is weird i figured out that the error was not in source code but in text file although it has txt suffix and it looks like a standard text file in pspad its not running the script from dos i discovered that there are spaces between each letter in the file so i examined it with an hex editor and i found that its an unicode file i dont know why it happened i obtained the file by saving an excel xls file in txt formatp
0
automatically changing name of downloaded files using python
pif i understand the problem correctly you could loop through the files in your download directory each time you download a new file and look for the file with a dash in it then make the character replacement on that file this should do itp precodeusrbinpython import subprocess os def renamefile for f in oslistdirosgetcwd if in f and fendswithcsv osrenameffreplace file openlinks20151111txtr for url in file print downloadin urlstrip subprocesscallwget contentdisposition urlstrip renamefile codepre pdepending on how the file names are structured you may need to tighten the criteria for your file search you could compile a regular expression to match the text format more strictly p
0
django logging from batchcron scripts
pdefine logging in settingspy in following wayp precodelogging version 1 disableexistingloggers false handlers file level debug class loggingfilehandler filename pathtododailymagiclog loggers myappmyscriptlogger handlers file level debug propagate true codepre pthan you can use logger codemyappmyscriptloggercode to write info to the file directly from djangop precodeimport logging logger logginggetloggermyappmyscriptlogger class commandbasecommand def handleself args options do some stuff loggerinfosome info for logs codepre phowever i suggest you to keep logging from crontab as well because it can handle any error that happens before invocation of django for example it will also handle missing python interpreter or wrong environmentp pps if you just want to write all logs from django to stdout use following config for loggerp precodelogging version 1 disableexistingloggers false handlers console class loggingstreamhandler loggers myappmyscriptlogger handlers console level debug propagate true codepre
0
append numpy ndarray to pandas dataframe
pcreate iteratively the array to make it 10x100 then pass it to codedataframecodep pyou can use codenpinsertcode or codenpvstackcode to create the 10x100 arrayp
0
how to update a field based on the update of another field
pi was able to resolve the issue i changed the code to thisp precodecustomerobjchangechangedictfieldupdatenewaccountfieldrefnewaccount6 codepre pthis grabbed the 6 digits as necessary and i was able to eliminate a line of code p
0
django 17 how to purge single users all sessions to allow access to app only from one tab
pyou do not understand exactly how sessions work what you want to do cannot be enforced in a secure mannerp pimagine that sessions amp cookies work much in the same way that your safety deposit box amp security key work anyone with an extra copy of the keycookie will be able to access the session from anywhere they please there is no way with your simple implementation of doing something funny with sessions in django to overcome this limitation so just forget about itp plarger websites such as facebook get around this problem by using more advanced mechanisms of security ssl heuristics etcp
0
mezzanine customizing profiles
pthis question is a bit old but i think you can safely ignore the warningp pyou should be able to accomplish the extra configuration by connecting to the pre or post save signal for the profile modelp
0
python extract values from text using keys
passuming your file is in something called sampletxttxt this would work it creates a dictionary mapping from key list of valuesp precodeimport re with opensampletxttxt r as f txt fread keys firstname lastname color d for key in keys dkey refindallkeyrssn txt codepre
0
separate year from other number in python
passuming a year is four digits long and is an integerp precodedef intlenn length 0 while n gt 0 length 1 n 10 return length ll 700 13844 5 1862 398 30 2050 30 981 180 10 6 640 29 4653 45 114 10 231 2002 2002 17647 10 print i for i in ll if typei int and intleni 4 out 1862 2002 2002 codepre
0
linking two programs together in python
pif you are using a hrefhttpswikipythonorgmoinpyqt relnofollowpyqta you can use a hrefhttppyqtsourceforgenetdocspyqt4newstylesignalsslotshtml relnofollowsignals and slotsa to define a callback function when a certain button is clickedp pyou can hide the ui of the current program and display the ui of the other program when the button is clickedp
0
search patterns with variable gaps in python
precodeimport re def grepl pattern r recompilepattern return for in l if rsearchpattern nameselected grepnames tw2t codepre pnote the use of codewcode instead of codealphacodep
0
django orderby in cbv
pyou can try something like to order my queryset by nevp pfor ascendingp precodedef getquerysetself qs selfmodelobjectsorderbynev codepre pfor descendingp precodedef getquerysetself qs selfmodelobjectsorderbynev codepre
0
python break a function nested inside a loop
pyou can use a hrefhttpsdocspythonorg2libraryexceptionshtmlexceptionsstopiteration relnofollowcodestopiterationcodea to exit from all loops until its caughtp precodetry for i in range10 if i 5 raise stopiteration else print i except stopiteration print caught codepre pgivesp p0 1 2 3 4 caughtp pthe codestopiterationcode codeexceptioncode is exactly that an exception not an errorp blockquote praised by an iterators next method to signal that there are no further values this is derived from exception rather than standarderror since this is not considered an error in its normal applicationp blockquote pyou can put it as deeply as you want in your nested loops but you have to catch it at the level you want to break out of ie the level at which you want to emstop iterationem top plooking at your question and trying to make sense of what youve written it looks like you want to do something like this maybep precodefor url in listofurls if urlqueryurl htmlminingurl def urlqueryurl page parseurllibrequesturlopenurl return text in pageread here is where i want a statement to stop and go to the next item in the loop like continue in a for loop codepre pthis will then only run codehtmlminingurlcode when codetextcode is in the page youre parsing if its not it will skip that entry and move onto the next onep
0
how to fetch the value from form errors attribute in django
pnot very elegant but can try thisp precode for field in form if fielderrors fieldlabel fielderrors endif endfor codepre
0
how do you check an object is an instance of file
ptypically you dont need to check an object type you could use ducktyping instead ie just call codefreadcode directly and allow the possible exceptions to propagate it is either a bug in your code or a bug in the caller code eg codejsonloadcode raises codeattributeerrorcode if you give it an object that has no codereadcode attributep pif you need to distinguish between several acceptable input types you could use codehasattrgetattrcodep precodedef readfileorfilename readfile getattrfileorfilename read none if readfile is not none got file return readfile with openfileorfilename as file got filename return fileread codepre pif you want to support a case when codefileoffilenamecode may have codereadcode attribute that is set to codenonecode then you could use codetryexceptcode over codefileorfilenamereadcode note no parens the call is not made eg a hrefhttphgpythonorgcpythonfile34libxmletreeelementtreepyl787 relnofollowcodeelementtreegetwritercodeap pif you want to check certain guarantees eg that only one single system call is made codeiorawiobasereadncode for n 0 or there are no short writes codeiobufferediobasewritecode or whether readwrite methods accept text data codeiotextiobasecode then you could use codeisinstancecode function with a hrefhttpsdocspythonorg3libraryiohtmlclasshierarchy relnofollowabcs defined in codeiocode modulea eg a hrefhttphgpythonorg/cpython/file/3.4/lib/xml/sax/saxutils.py#l72" rel="nofollow">look at how <code>saxutils._gettextwriter()</code> is implemented</a>.</p>
0
switch translations in python and gettext
precodex cardrank print xj xa xq xk codepre pemtotally worksemp pyes the string literals must be somewhere in ur codep pthe string literals emneed not be in the same moduleem which displays the text putting the string literals in the same module is not pretty on the eyes not oopp psuccessfully tested using py v27 gtk v22410 gettext 0181p precodepython import gtk gtkgtkversion 2 24 10 gettext version gettext gnu gettextruntime 0181 codepre pstrongdisclaimerstrong dont attempt this before getting gettext working for your python application including being able to change locales languages on the fly these are no small feats this will remove 99 of the confusion then itll either work or it wont im saying itll workp
0
log in to django site through facebook
phave a look at the widely used a hrefhttppypipythonorgpypidjangofacebook relnofollowdjangofacebooka appp
0
pandas sliding average based on unevenly index values
pwhat you needed to do from the a hrefhttpstackoverflowcomquestions14300768pandasrollingcomputationwithwindowbasedonvaluesinsteadofcountslq1answera you linked to was to turn the index into a series so you can then call apply on it the other key thing here is that you also have to index the constructed series the same as your df index as the default is to just create an index from scratch like 0123p precodein 26 def fx c ser dflocdfindex gt x amp dfindex lt x cb return sermean dfc pdseriesdata dfindex index dfindexapplylambda x fxc04 df out26 a b c a 00 00 10 11000000 01 01 11 12666667 02 02 12 13500000 05 05 15 15000000 10 10 20 25000000 14 14 30 40000000 15 15 50 50000000 codepre
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how to download a xls into a python object via ftp with python ftplib
palthough i was looking for a way to directly purse the ftped excel file into python object if i allows saving the excel file in my directory and reread it again the following worksp precodeftp ftpwebftpvancouverca ftplogin ftpcwdopendataxls filename newfoodvendorlocationsxls ftpretrbinaryretr s filename openmylovelynewfilexls wwrite ftpquit workbook xlrdopenworkbookmylovelynewfilexls worksheet workbooksheetbynamequeryvendorfood numrows worksheetnrows 1 currrow 1 while currrow lt numrows currrow 1 row worksheetrowcurrrow print row codepre pi thank jacoppens for his advice p
0
odoo 80 creating slave records in code
precodeclass agreementmodelsmodel name attagreement lineid fieldsone2manyattagreementlineagreementid lines copytrue name fieldscharstringname requiredtrue apimodel def createself values return superagreement selfcreate values apionchangename def onchangenameself if selfname for x in range151 selfenvattagreementlinecreateagreementid self id name strx qty x 100 class agreementlinemodelsmodel name attagreementline agreementid fieldsmany2oneattagreement ondeletecascade selecttrue requiredtrue readonly true name fieldscharstringname requiredtrue qty fieldsintegerstring qty apimodel def createself values return superagreementline selfcreate values codepre
0
how can i model a scalable set of definitionterm pairs
pa hrefhttpblogcameronlegercom20110531pythonexamplepicklingthingsintomysqldatabases relnofollowpickling objects into a databasea means itll take some effort to create an interface to modify the weekly lessons from the front end but is well worth the timep
0
beautifulsoup text method returns text without separators n r etc
pyou can do thisp precodesoup beautifulsouphtml ols soupfindallol for the two languages for ol in ols ps olfindallp for p in ps for item in pcontents if stritemltbr gt print stritem codepre
0
linking sublime text 2 to my anaconda packages
pthe best doc youre going to find is the a hrefhttpssublimetextunofficialdocumentationreadthedocsorgenlatestextensibilitypluginshtml relnofollowsublime text unofficial documentationap pthis question asks about adding modules to sublime as well a hrefhttpstackoverflowcomq151805371695680how to include third party python packages in sublime text 2 pluginsap pgist of the answer is to modify the embedded pythons path to look for your modulesp
0
how to print what i think is an object
pit might be handy to look at the pprint module a hrefhttpdocspythonorglibrarypprinthtml relnofollowhttpdocspythonorglibrarypprinthtmla if youre running python 27 or morep precodefrom pprint import pprint pprintx codepre
0
how to disable nose tests coverage report
pi am not familiar with django managepy script but i guess that you can look into the test task and see hot it calls nose i guess that you would like to only run the tests without the coverage nose documentation is here a hrefhttpsomethingaboutorangecommrlprojectsnose0113usagehtml relnofollowhttpsomethingaboutorangecommrlprojectsnose0113usagehtmlap
0
how to dbchange mongo flask
pjust use dbalias aliasname in your document classp pjust to make sure you register the alias name registerconnectaliasnamedbhostport you can register as many alias as you want here is the doc for registerconnect a hrefhttpsmongoengineodmreadthedocsorgenlatestapireferencehtmlmongoengineregisterconnection relnofollowhttpsmongoengineodmreadthedocsorgenlatestapireferencehtmlmongoengineregisterconnectionap
0
tensorflow 09 skflow model save and restore doesnt work
pi belive save and restore have been deprecated in favor of the codemodeldircode param when building the estimatorregressor p precoderegressor skflowtensorflowlinearregressormodeldirhomemodel regressorfitx bostontarget estimator skflowtensorflowlinearregressormodeldirhomemodel estimatorpredict codepre
0
python code fragment list
pat least two elements means that you can say the following for your list codelcode without worrying about an codeindexerrorcode being raisedp ul licodel0 first element is guaranteed to existcodeli licodel1 second element is guaranteed to existcodeli licodel1 last element is guaranteed to exitcodeli licodel2 nexttolast element is guaranteed to existcodeli ul pi emthinkem second and last refer to codel1code and codel1code unless its a poorly worded ellipsis and they mean secondtolast and lastmdashcodel2code and codel1codep
0
python reading text file and splitting into different lists
pif you are looking to have a list for each line you can use a dictionary where the key is the line number and the value of the dictionary entry is the list of names for that line something like thisp precodewith openmyfiletxt r as fin students kline1split for kline in enumeratefin print students codepre pthe line1 is to get rid off the carriage return at the end of each linep
0
how can i get input and rawimput functions to work in python
pnote that the meaning and purpose of both codeinputcode and coderawinputcode have strongchangedstrong between python 2 and python 3p h2python 2h2 ul licodeinputcode reads keyboard input emandem parses it as a python expression possibly returning a string number or something elseli licoderawinputcode reads keyboard input and returns a string without parsingli ul h2python 3h2 ul licodeinputcode reads keyboard input and returns a stringli licoderawinputcode does not existli ul pto get similar behaviour in python 3 as python 2s codeinputcode use codeevalinputcodep
0
how can i write a python function to accept arguments and a keyword argument
pwell all args really is a variable list of arguments and all kwargs really is a dictionary keywordonly argumentsp punless i am misunderstanding why not just do thisp precodedef xargs afalse print args a x12true lt just passes in a list instead of special list and dict output 12 true x12 output 12 false codepre pit is not as pythonic without the variable argument list and detection of the kwargs keywordonly arguments dict but probably works for your needsp
0
python regex replace to create smiley faces
pheres your oneliner sorry no regexp precodefor word in sentencesplit print 8 lenword 2 d codepre
0
select rows for a given value from file in python
pyoure close i think im really not even sure what that last if statement is going to be doing but it looks like a list comprehension mixed with an if also mixed with the fact that youre reassigning x if that statement actually worked try something like thisp precodefor line in a columns linestripsplit if columns0 gt 20 print line codepre
0
win32api pyhook how to get the users typing language
pcheck a hrefhttpstackoverflowcoma12383335660175this answera to a similar question seems you need to use getguithreadinfo to determine the current active thread on the desktop and then pass that to getkeyboardlayoutp
0
inserting tuples elements to database
pnote that the codeexecutemanycode is for inserting multiple rows egp precodeimport sqlite3 the table structure is create table tab a char1 b char2 c char3 conn sqlite3connectctestdb stmt insert into tab a b c values cur conncursor many rows vals 123 234 345 curexecutemanystmt vals curclose codepre pthis will result in three rows in the database if it is because you have multiple values in one query you need to format itp pstrongeditstrong added formatting with dictionariesp pby using the following approach you do not need to consider the order of the values in the codeformatcode call because the key in the dictionary is mapping the value into the codekeywordcode placeholderp precodevalues a valuea b valueb stmt insert into tab cola colb values a bformatvalues codepre
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looking for input in model design for django schools
pheyi agreeit looks pretty good someone advised me to use autoincrement on all tables just to be sure there really is a unique id on every record its your choice if youd like to go that routep
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how can i extrat a specific src url format using regex
ptry this p precodesrc codepre pand get group 1p pa hrefhttpsregex101comrei3bf22 relnofollowdemoap
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pygeolibgeocodererror error zeroresults
ptry apis from other sources your addresses are not recognizable by geocoderp
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in python how to remove a range of lines from a file without using fileinput module
pstrongwith second filestrongp precodewith openfileinput as fin with openfileoutput as fout for il in fin if start lt i lt start upto foutwritesnl codepre pstronginmemorystrongp pif you are adamant about not using a second file how about loading the entire file into memory eg p precodeimport sys filename start upto sysargv14 start upto intstart intupto fread openfilename original listfread freadclose fileinput openfilename w for line in original if start lt fileinputlineno lt start upto pass else fileinputwritesn line fileinputclose codepre pyou might want to consider using context managers for file io also replacing with the list of lines allows you to simply slice into that listp precodeimport sys filename start upto sysargv14 start upto intstart intupto with openfilename as fread original listfread with openfilename w as fileinput for line in originalstartstartupto fileinputwritesn line codepre
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python json encoder to support datetime
precodejsondumpsr defaultlambda o oisoformat if hasattro isoformat else o codepre
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how can twisted interact with command line programs can nodejs
pif you want your twisted application to interact with commandline programs by calling them and capturing their output you can do that with a hrefhttptwistedmatrixcomdocumentscurrentapitwistedinternetinterfacesireactorprocesshtml relnofollowspawnprocessa as described at tritium21s link it runs asynchronously so your twisted app will carry on processing and can run other programs in the meantimep pif you want to run a commandline program which will have some effect on the twisted app you can have twisted a hrefhttpstwistedmatrixcomdocumentscurrentcorehowtoservershtml relnofollowlisten on a socketa and have the programs connect to it to send commands again twisted can talk to many programs at once provided you write the processing code asynchronously one really good way to talk to the server is with amp the a hrefhttptwistedmatrixcomdocumentscurrentapitwistedprotocolsamphtml relnofollowasynchronous messaging protocolap pand of course the same app can do both of those things at once and more besidesp
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django registration page with country state field after submission
pthese kind of filtered forms can be easily done using dajax if i understand correctly you want to do something along the lines of a hrefhttpwwwdajaxprojectcomforms relnofollowhttpwwwdajaxprojectcomformsa p pi have tried this before and it helps make great filtered forms if not dajax your other option is to write javascript to send your form data to your view and then fetch your state depending on your country and append the new choices to your state selection fieldp
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how i could write it better without counter etc libraries
pi dont like loops and try to avoid them whenever possible i didnt implement the parsing of the string into a list of integer tho so just for fun i whipped up a solution that relies only on map filter and zipp precodegtgtgt groupedbynumber maplambda n filterlambda m m n 111112222333445 range110 1 1 1 1 1 2 2 2 2 3 3 3 4 4 5 gtgtgt countwithnumber ziprange110 maplambda n lenn groupedbynumber gtgtgt countwithnumber 1 5 2 4 3 3 4 2 5 1 6 0 7 0 8 0 9 0 codepre pnothing but the standard library was used also no mutability or juggling with indexes anywhere hopefully the fact that theyre tuples and not lists is okay p
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http request object does not respond
pwhy not you are using coderendertoresponsecode p pthe answer of your question is you are not returning the codehttpresponsecode object p pif your login is successful then only you will be redirect to success p ptry this p precode return rendertoresponseyourtemplatename contextinstancerequestcontextrequest codepre pdont forget to import contextinstance like p precodefrom djangotemplate import requestcontext codepre
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django variables with a list of values
pi would suggest a foreign key instead of a many to many relationshipp precodeclass personmodelsmodel class hungrymodelsmodel person modelsforeignkeyfieldperson start models datetimefield end models datetimefield hungry models booleanfield codepre pi guess you could replace the codepersoncode field on codehungrycode with a codecharfieldcode so as to squeeze this into one table but thats poor db design it should really be two separate tablesp
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pip search aap shows availability but pip install aap will not succeed
plong ago in a galaxy not too far away pippypisetuptools used to scrape any linked site for what looked like download links it no longer does this so while aap my have pipinstalled in the past it will not until the package maintainer puts a distribution on pypip
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python console progress
pi do it as followsp pre classlangpy prettyprintoverridecodeprint currentline 100 totallines end r codepre pdont forget that too many outputs to console will slow down your loopsp
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python import error specific case
pi want to share my solution with you since anybody reading the question seems to have similar problems p pthe problem occured because the package werent included in pythonpath syspath i am calling the plugins in a new thread with a script called executepy this is called via cmd from the mainpy because i cant multiprocess my classes and since the plugins are located in plugins python only includes this path not the importmodule path somehow it seems that it has been included on windows i dont really know what has happened there tbh p pwhat i did was i included the codesyspathappendcode stuff on my executepy which executes the plugins as follows codefrom pluginhelper import scrapehostnames hostnamestoips getsourcecode my ide marks the import statement red now but it is working since i am appending the packagep
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systematic modifying of lists elements
precodegtgtgt segmentsinit 1 2 3 4 5 6 7 8 9 gtgtgt listzipsegmentsinit03 listmaplambda xx segmentsinit23 0lensegmentsinit3 1 3 0 4 6 0 7 9 0 codepre peven though its better to club a single 3d coordinate together for better readability but if you want to flatten the list you can use this p precodegtgtgt i for l in listzipsegmentsinit03 listmaplambda xx segmentsinit23 0lensegmentsinit3 for i in l 1 3 0 4 6 0 7 9 0 codepre
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cannot run appengineadmin on devserver
pit wired that i have been using gae with python26probably 261 and every thing worked finep pbut now i get the same multiprocess import errorpython262p
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python how do i use only 1 column when using multiple text files
pusing ipython panda i was able to easily and quickly analyze all text filesp pa hrefhttpnbviewerjupyterorggithubjvnspandascookbookblobv01cookbookchapter2022020selecting20data20amp20finding20the20most20common20complaint20typeipynb relnofollowjupyter notebookap pcode i usedp precodeimport pandas as pd dft pdreadcsvsampletxt dftcolumnvaluecounts codepre
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looping a program with while statement
ptry the followingp precodenumber 10 guess 9 while guess number guess intinputtype in an integer if guess number print good job elif guess lt number print the number is higher elif guess gt number print the number is lower else print try again print done codepre
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python send recv binary data
blockquote pcodeintremotestruct0codep blockquote pthis looks a lot like some c code python doesnt have type casts like cp pcodeintcode refers to an object the way you use it is by calling it like its a functionp pinstead write something like codeintremotestruct0code what you wrote works because the extra parenthesis are totally redundant and dont change the meaning this isnt just a syntactic difference though its a basic difference in the type systems of the two languagesp pthis has nothing to do with your question thoughp precodeipbytes intremotestruct0tobytes1 byteorderlittle intremotestruct1tobytes1 byteorderlittle intremotestruct2tobytes1 byteorderlittle intremotestruct3tobytes1 byteorderlittle codepre pthis is an emincrediblyem verbose way to pack an ipv4 address into four bytes try this insteadp precodeimport socket print socketinetptonsocketafinet 1234 codepre pthough this is also not directly related to your questionp pthe source of your codeindexerrorcode problem im guessing thats the exception you encounter you said access out of bounds error which isnt something that actually exists in pythons builtin types dont paraphrase errors quote them verbatim is very likely somewhere in the vicinity ofp precodevar serversockrecvfrom12 codepre pnotice the return value of a hrefhttpdocspythonorg3librarysockethtmlsocketsocketrecvfrom relnofollowrecvfroma emthe return value is a pair bytes address)</em>.</p> <p>if you try to index into this object at <code>6</code> then you'll definitely get an <code>indexerror</code> raised, yes.</p> <p>using <code>str</code> to get a unicode string representation of this pair won't really help though - although it might prevent the indexing operation from failing because the resulting unicode string will probably be long enough. :) you'll be getting garbage, though.</p> <p>instead, try indexing into the bytes that you read instead:</p> <pre><code>data, addr = serversock.recvfrom(12) if len(data) &gt; 6: seqnum = ord(data[6]) </code></pre> <p>notice you really do need to be careful about length checking here. just because you passed <code>12</code> to <code>recvfrom</code> doesn't mean it returns 12 bytes. it means it returns <em>up to</em> 12 bytes. you don't want your program to explode with an unhandled exception the first time someone sends you a short datagram.</p>
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prevent change of field if related objects exist
pset codesurveycode and coderesponsecode field in coderesponsecode model unique by a hrefhttpsdocsdjangoprojectcomen18refmodelsoptionsuniquetogether relnofollowunique togethera like thisp precodeclass responsemodelsmodel survey modelsforeignkeysurvey response modelstextfield class meta uniquetogether survey response codepre
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installing easyinstall with setup tools
pit means that you should have the path to the directory containing the file when you do p precodeecho path windows echo path linuxcygwin codepre pin the command line if it does not appear you should add itp pto do so check out the following linksp ul lia hrefhttpstackoverflowcomquestions7488329gitsettingpathvariablegit setting path variablea linuxli lia hrefhttpstackoverflowcomquestions9290243howtosetanthome92904319290431how to set anthomea windowsli ul
0
save python queue to a file
pa simple option i can offer would be to wrap a database table in a class and use that as your queue a autoincrement column would work wonders for this the next item to remove is the one with the lowest idp precodeclass dbqueue init pick some random id for this run or set it to some thing you know put insert entry into table get the update select combo removes the need for a database that has transactions if no entries bear your id update the next entry that is not already marked with your id select the entry that matches your id and return it taskdone delete the entry with your id codepre pthis wont have the best performance depending on how often the queue gets updated even the inmemory sqlite database wont be as fast as a linked list structure the flip side is that you can view the database using any tool that can access the database so you can see which one is in progressp
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how change table contents and style using pythondocx
pprobably ive found a solution it depends of documentxpath a way to take a map of it is decompress the docx and read the worddocumentxml filep precodepathcell the path you individuate in documentxml docbody documentxpathwdocumentwbodypathcell namespacesnsprefixes0 print replacing docbody replacedocbodywelcomehello codepre pive found this way to run the game any else p
0
rapidly redrawing tkinter window what is a faster way
pa few things could probably be done to improve the fps of your codep ol liget rid of the wupdate and use the normal event loop via mainloopli liget rid of the wdeleteall and reuse the blocks just move them around instead of delete and recreate them allli liuse the help of the canvas find method to do collision detection instead of your check only in python codeli lirewrite in tcl so you can use tcls threading instead of the crippled cpython threads only useful if you have more than one cpucore li ol
0
how can we test the address of the server
pif the connection fails then there must be an error on the server side that means the url is good but something breaks and you should see an error in the error log or the terminal where you started the serverp
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printing data from list
precodegtgtgt new2 id fk 1 1 2 1 5 3 6 2 gtgtgt for cols in new2 print 55formatcols codepre pprintsp precodeid fk 1 1 2 1 5 3 6 2 codepre
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how to write dictionary values to a csv file using python
ptry to use a hrefhttppandaspydataorg relnofollowcodepandascodea here is pandass feature about your problem p ptools for reading and writing data between inmemory data structures and different formats csv and text files microsoft excel sql databases and the fast hdf5 formatp pits very convenient and powerfulp
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how to get a random line from within a gzip compressed file in python without reading it into memory
pforgive the very late answer but you can use the codeseekcode method to position in the file if you know the size of the file from codegunzip lcodebr then throw away the next read as it will probably be a partial line and use the subsequent read as your random datap pprint 10 random lines from a gzipped text filep precodeimport random import gzip os f gzipopensometxtgzr uncsize ospopengunzip lq sometxtgzread uncsize uncsizestripsplit 1 uncsize uncsize1stripsplit 1 for x in range111 fseekrandomrandint0intuncsize0 dump nextf print random line from byte pos ftell nextf fclose codepre
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how to make statements in python script behave just like them executed in interactive shell
ptry sticking a pause codetimesleep1code for instance after each codecomportwritecode this will give the device time to respond to each command before you look for the responsep pas a hrefhttpstackoverflowcomquestions7101284howtomakestatementsinpythonscriptbehavejustlikethemexecutedininterac71017127101712hyry points outa setting codetimeoutcode to code0code will return immediately so it does not do what you think it does beyond that though when you execute the statements one at a time theres a delay as you type in each line when you execute them in a script they run without much of a gap in between p
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python 27 select words in list prior to number
ptry this which will split on the number and get you the name partsp precodeimport re exp recompilerdd with openmainfiletxt as f opennamestxtw as out for line in f line linestrip if lenline try outwritenformatresplitexp line0strip except printcould not parse formatline codepre pthe regular expression codeddcode meansp ul licodedcode one or more digitsli licodecode an optional codecode note in regular expressions codecode has special meaning so we escape it when we mean the emliteralem codecodeli licodedcode followed by one or more digitsli ul pthe codecode around it makes it to a capture group which results in the followingp precodegtgtgt x rdd gtgtgt l benzoyl peroxide 50 mgml topical lotion gtgtgt resplitx l benzoyl peroxide 50 mgml topical lotion codepre
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copy past objet in python opencv2
puse grabcut algorithm to extract the forground image here is some code that u will also like p precodeimg cv2imreadimagejpg mask npzerosimgshape2npuint8 bgdmodel npzeros165npfloat64 fgdmodel npzeros165npfloat64 rect 5050450290 cv2grabcutimgmaskrectbgdmodelfgdmodel5cv2gcinitwithrect mask2 npwheremask2mask001astypeuint8 img imgmask2npnewaxis pltimshowimgpltcolorbarpltshow codepre pthis might be little hazzy or not soo sharp what u can do is apply a edge detection first to refine ur input and apply the above p
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how can i convert a list of hex colors or rgb srgb stored in a text file into an image
pyouve tagged this with the a hrefquestionstaggedprocessing classposttag titleshow questions tagged 39processing39 reltagprocessinga tag so here is the processing solutionp pstrongstep 1strong load the file you can use the codeloadstringscode functions for this this gives you an array of codestringcode values which in your case will hold your hex values more info can be found in a hrefhttpsprocessingorgreferenceloadstringshtml relnofollowthe referenceap pstrongstep 2strong loop through those hex values use a regular codeforcode loop or an enhanced codeforcode loopp pstrongstep 3strong convert each hex codestringcode into an codeintcode color using the codeunhexcode function this gives you an codeintcode that can be passed into any color function such as codefillcode more info can be found in a hrefhttpsprocessingorgreferenceunhexhtml relnofollowthe referenceap pstrongstep 4strong use those colors to draw your image you havent said how the lines in the file map to a coordinate onscreen so youll have to do that mapping then just change the fill color and draw a rectangle at that coordinatep pits hard to answer general how do i do this type questions other than to point you to a hrefhttpsprocessingorgreference relnofollowthe referencea and tell you to break your problem down into smaller steps and just try something then if you get stuck on one of those specific steps you can ask a more specific i tried x expected y but got z instead type question which is more what stack overflow was designed for good luckp
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python and zmq rep socket not receiving all requests
panswering my own question it seems like it was an issue with the large number of sockets i was using and also possibly the memory limitations of the gce instances used see comment thread above for more detailsp
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pyqt open another window from a button
pat the end of the openwindow function you havep precodesysexitappexec codepre pwhich is ending the code and i dont think you should be making a new app per windowp
0
flask 404 on dreamhost
pi found the answer here a hrefhttpblogtuxcodercom201198dreamhostpythonwsgi relnofollowhttpblogtuxcodercom201198dreamhostpythonwsgiap blockquote pif you plan to do any active development on the dreamhost side this step will simplify your efforts werkzeug comes with a really nice debugging engine but it does not work with the dreamhost configuration by default or example if you have a simple python coding error in your app it will result in the followingp pimg srchttpistackimgurcomylb7hpng altdefault error page of werkzeugp pin this mode youre out of luck the only option is to startup a local server where you can go back and test the app in some cases it might be a big effort just to replicate the bugp pwith the werkzeug debugger enabled and patched youll get a much nicer outputp pimg srchttpistackimgurcomisalhpng altwerkzeug debuggerp blockquote phere is what it says on the dreamhost wiki a hrefhttpwikidreamhostcomflask relnofollowhttpwikidreamhostcomflaska in codepassengerwsgipycodep blockquote precode uncomment next two lines to enable debugging from werkzeugdebug import debuggedapplication application debuggedapplicationapplication evalextrue codepre blockquote
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need help in python variable updation pygame module
pyou are confusing the emeventem keyup with the up emkeyem the event keyup occurs when a key any key is released the event keydown occurs when any key is pressed downp pin you code this means that when the up key is pressed down the speed is set to 01 and when the up key is release the speed is set to 00p pif you want the speed to emkeepem increasing and decreasing when a key is released you should use a timer like sop precodeimport pygame speed 0 screen pygamedisplaysetmode400400032 pygamedisplayupdate clock pygametimeclock pygametimesettimerpygameuserevent1 20 while true for event in pygameeventget if eventtype pygamequit break if eventtype pygameuserevent1 if pygamekeygetpressedpygamekup if speed lt 8 speed01 else if speed gt 01 speed 01 else speed 00 pygamedisplayupdate printspeed clocktick60 pygamequit quit codepre padjust the delay in the settimer to suit your taste also note the addition to reset the speed to zero float operations are not completely exact so repeated adding and substracting can lead to a zero that is negativep
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how to properly create a list subclass that returns a list generated from file in python
pif you want to avoid inheritance and userdefined methods id leverage pythons a hrefhttpwwwrafekettlercommagicmethodshtml relnofollowmagica methods to do so p
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building a python counter with rollover
pi have an example just more shorterp precodeclass messagecounter def initself selfvalue 0 def incrementself resetfalse selfvalue selfvalue 1 if selfvalue lt 4294967295 and not reset else 1 codepre
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python subprocess output on nohup
pim not 100 sure of the underlying issue here but when you invoke nohup in the shell its disconnected some of the stdinstdout from the terminal process which i suspect it causing some of this interactions youre seeingp pgiven that youre doing this from a remote machine id actually recommend you look at using something like a hrefhttpdocsfabfileorgen18 relnofollowfabrica as a library to do what youre after its pretty straightforward and does most of the handling of terminal sessions as well as closing things down nicely for you when youre completep psomething likep precodefrom fabric import api from fabricapi import env import fabric envhoststring ss username remotehost envdisableknownhosts true envpassword password fabricstateoutputstdout false fabricstateoutputstderr false results apirundf h codepre
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