File size: 3,661 Bytes
64fede2 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 |
import json
from typing import Dict, List, Tuple
import requests
from tqdm import tqdm
from .lang_def import WIKIPEDIA_LANGUAGES
_QUERY_TEMPLATE_MEDIA = "https://{lang}.wikipedia.org/w/api.php?action=query&meta=siteinfo&siprop=namespacealiases|namespaces&format=json&formatversion=2"
_MEDIA_ALIASES_IGNORED = ["Image", "File", "Media", ""]
def create_media_and_category_aliases(
date: str,
) -> Tuple[Dict[str, List[str]], Dict[str, List[str]]]:
"""
Create media and category aliases for a given date.
For each Wikipedia language code,
- query the Wikipedia API with the template above
- get media aliases from namespaces -2 and 6
- get category aliases from namespace 14
"""
media_aliases = {}
category_aliases = {}
for language in tqdm(WIKIPEDIA_LANGUAGES[date]):
try:
url = _QUERY_TEMPLATE_MEDIA.format(lang=language)
r = requests.get(url).json()
# Media aliases (namespaces -2 and 6)
ns_aliases = [
alias_def["alias"]
for alias_def in r["query"]["namespacealiases"]
if alias_def["id"] in [-2, 6]
]
aliases = [
ns["name"]
for ns in r["query"]["namespaces"].values()
if ns["id"] in [-2, 6]
]
merged = {
alias
for alias in sorted(ns_aliases + aliases)
if alias not in _MEDIA_ALIASES_IGNORED
}
if merged:
media_aliases[language] = list(sorted(merged))
# Category aliases (namespace 14)
cat_aliases = [
alias_def["alias"]
for alias_def in r["query"]["namespacealiases"]
if alias_def["id"] in [14]
]
aliases = [
ns["name"]
for ns in r["query"]["namespaces"].values()
if ns["id"] in [14]
]
merged = {alias for alias in sorted(cat_aliases + aliases)}
if merged:
category_aliases[language] = list(sorted(merged))
except Exception as e:
print(f"Error for language {language}: {e}")
return media_aliases, category_aliases
def write_python_module(filename: str, varname: str, aliases):
"""
Write a python module with the given aliases.
For instance, if called with filename="media_aliases.py", varname="MEDIA_ALIASES",
and aliases={"en": ["File", "Image"]}, the following Python file `media_aliases.py`
will be written:
```
MEDIA_ALIASES = {
"en": ["File", "Image"]
}
```
We need this instead of a JSON file in order to be able to import it in the
dataset script automatically.
"""
with open(filename, "w") as f:
f.write(f"{varname} = ")
json.dump(aliases, f, indent=2, ensure_ascii=False, sort_keys=True)
# Unused at the moment.
def get_all_languages():
"""Get all languages from the wikipedia API."""
url = "https://meta.wikimedia.org/w/api.php?action=sitematrix&format=json&formatversion=2&smlangprop=code|name|site&smtype=language"
r = requests.get(url).json()
languages = [lang["code"] for lang in r["sitematrix"][1]["site"]]
return languages
if __name__ == "__main__":
latest_date = sorted(WIKIPEDIA_LANGUAGES.keys())[-1]
media_aliases, category_aliases = create_media_and_category_aliases(
date=latest_date
)
write_python_module("media_aliases.py", "MEDIA_ALIASES", media_aliases)
write_python_module("category_aliases.py", "CATEGORY_ALIASES", category_aliases)
|