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import sys
REQUIRED_PYTHON = "python3"
def main():
system_major = sys.version_info.major
if REQUIRED_PYTHON == "python":
required_major = 2
elif REQUIRED_PYTHON == "python3":
required_major = 3
else:
raise ValueError("Unrecognized python interpreter: {}".format(
REQUIRED_PYTHON))
if system_major != required_major:
raise TypeError(
"This project requires Python {}. Found: Python {}".format(
required_major, sys.version))
else:
print(">>> Development environment passes all tests!")
if __name__ == '__main__':
main()
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