Articles with the tag version
Getting package version from code without importing
Posted on 2015-04-07
I use this code for getting version info from package code without importing it, as it has to be installed to be imported and it can't be installed without version number. Classic 'Chicken or the egg' dilema.
I'm using ast module from Python stdlib to parse file from package code. In example I'm using __init__.py but one can use any other file.
It's works with module level variables (only string or number) and it's alternative to using eval() or exec().
setup.py
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import os
import ast
from setuptools import setup, find_packages
def get_info(filename):
info = {}
with open(filename) as _file:
data = ast.parse(_file.read())
for node in data.body:
if type(node) != ast.Assign:
continue
if type(node.value) not in [ast.Str, ast.Num]:
continue
name = None
for target in node.targets:
name = target.id
if type(node.value) == ast.Str:
info[name] = node.value.s
elif type(node.value) == ast.Num:
info[name] = node.value.n
return info
file_with_packageinfo = "packagename/__init__.py"
info = get_info(file_with_packageinfo)
here = os.path.abspath(os.path.dirname(__file__))
# README = open(os.path.join(here, 'README.txt')).read()
# CHANGES = open(os.path.join(here, 'CHANGES.txt')).read()
requires = [
]
setup(name='packagename',
version=info.get('__version__', '0.0.0'),
description='Package description',
# long_description=README + '\n\n' + CHANGES,
classifiers=[
"Programming Language :: Python ",
],
author=info.get('__author__', 'Łukasz Bołdys'),
author_email='[email protected]',
url='http://dev.utek.pl',
keywords='',
packages=find_packages(),
include_package_data=True,
zip_safe=False,
test_suite='packagename',
install_requires=requires,
entry_points="""\
[console_scripts]
ddd = packagename.scripts.analyze:main
""",
)
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packagename/__init__.py
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__version__ = "0.5.1"
__author__ = "Łukasz Bołdys"
|