A cross-platform python discovery tool to help locate python on any system.
Project description
Installation
Install from PyPI:
$ pipenv install --pre pythonfinder
Install from Github:
$ pipenv install -e git+https://github.com/sarugaku/pythonfinder.git#egg=pythonfinder
Usage
Using PythonFinder is easy. Simply import it and ask for a python:
>>> from pythonfinder.pythonfinder import PythonFinder
>>> PythonFinder.from_line('python3')
'/home/techalchemy/.pyenv/versions/3.6.5/python3'
>>> from pythonfinder import Finder
>>> f = Finder()
>>> f.find_python_version(3, minor=6)
PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.6.5/bin/python'), _children={}, is_root=False, only_python=False, py_version=PythonVersion(major=3, minor=6, patch=5, is_prerelease=False, is_postrelease=False, is_devrelease=False, version=<Version('3.6.5')>, architecture='64bit', comes_from=PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.6.5/bin/python'), _children={}, is_root=True, only_python=False, py_version=None, pythons=None), executable=None), pythons=None)
>>> f.find_python_version(2)
PathEntry(path=PosixPath('/home/hawk/.pyenv/shims/python2'), _children={}, is_root=False, only_python=False, py_version=PythonVersion(major=2, minor=7, patch=15, is_prerelease=False, is_postrelease=False, is_devrelease=False, version=<Version('2.7.15')>, architecture='64bit', comes_from=PathEntry(path=PosixPath('/home/hawk/.pyenv/shims/python2'), _children={}, is_root=True, only_python=False, py_version=None, pythons=None), executable=None), pythons=None)
PythonFinder can even find beta releases!
>>> f.find_python_version(3, minor=7)
PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.7.0b1/bin/python'), _children={}, is_root=False, only_python=False, py_version=PythonVersion(major=3, minor=7, patch=0, is_prerelease=True, is_postrelease=False, is_devrelease=False, version=<Version('3.7.0b1')>, architecture='64bit', comes_from=PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.7.0b1/bin/python'), _children={}, is_root=True, only_python=False, py_version=None, pythons=None), executable=None), pythons=None)
>>> f.which('python')
PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.6.5/bin/python'), _children={}, is_root=False, only_python=False, py_version=PythonVersion(major=3, minor=6, patch=5, is_prerelease=False, is_postrelease=False, is_devrelease=False, version=<Version('3.6.5')>, architecture='64bit', comes_from=PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.6.5/bin/python'), _children={}, is_root=True, only_python=False, py_version=None, pythons=None), executable=None), pythons=None)
Windows Support
PythonFinder natively supports windows via both the PATH environment variable and PEP-514 compliant finder which comes by default with python 3. Usage on windows becomes:
>>> from pythonfinder import Finder
>>> f = Finder()
>>> f.find_python_version(3, minor=6)
PythonVersion(major=3, minor=6, patch=4, is_prerelease=False, is_postrelease=False, is_devrelease=False, version=<Version('3.6.4')>, architecture='64bit', comes_from=PathEntry(path=WindowsPath('C:/Program Files/Python36/python.exe'), _children={}, is_root=False, only_python=True, py_version=None, pythons=None), executable=WindowsPath('C:/Program Files/Python36/python.exe'))
>>> f.find_python_version(3, minor=7, pre=True)
PythonVersion(major=3, minor=7, patch=0, is_prerelease=True, is_postrelease=False, is_devrelease=False, version=<Version('3.7.0b5')>, architecture='64bit', comes_from=PathEntry(path=WindowsPath('C:/Program Files/Python37/python.exe'), _children={}, is_root=False, only_python=True, py_version=None, pythons=None), executable=WindowsPath('C:/Program Files/Python37/python.exe'))
>>> f.which('python')
PathEntry(path=WindowsPath('C:/Python27/python.exe'), _children={}, is_root=False, only_python=False, py_version=None, pythons=None)
Finding Executables
PythonFinder also provides which functionality across platforms, and it uses lazy loading and fast-returns to be performant at this task.
>>> f.which('cmd')
PathEntry(path=WindowsPath('C:/windows/system32/cmd.exe'), _children={}, is_root=False, only_python=False, py_version=None, pythons=None)
>>> f.which('code')
PathEntry(path=WindowsPath('C:/Program Files/Microsoft VS Code/bin/code'), _children={}, is_root=False, only_python=False, py_version=None, pythons=None)
>>> f.which('vim')
PathEntry(path=PosixPath('/usr/bin/vim'), _children={}, is_root=False, only_python=False, py_version=None, pythons=None)
>>> f.which('inv')
PathEntry(path=PosixPath('/home/hawk/.pyenv/versions/3.6.5/bin/inv'), _children={}, is_root=False, only_python=False, py_version=None, pythons=None)
Architecture support
PythonFinder supports architecture specific lookups on all platforms (coming soon):
Integrations
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