无需在 Python 中导入即可查找模块的路径

问题描述

我已经看到了几种通过首先导入来查找模块路径的方法.有没有办法在不导入模块的情况下做到这一点?

解决方案

使用 pkgutil模块:

>>>导入 pkgutil>>>package = pkgutil.get_loader("pip")>>>包.文件名'/usr/local/lib/python2.6/dist-packages/pip-0.7.1-py2.6.egg/pip'>>>package = pkgutil.get_loader("线程")>>>包.文件名'/usr/lib/python2.6/threading.py'>>>package = pkgutil.get_loader("sqlalchemy.orm")>>>包.文件名'/usr/lib/pymodules/python2.6/sqlalchemy/orm'

使用 imp 模块:

>>>进口进口>>>imp.find_module('sqlalchemy')(无, '/usr/lib/pymodules/python2.6/sqlalchemy', ('', '', 5))>>>imp.find_module('pip')(无, '/usr/local/lib/python2.6/dist-packages/pip-0.7.1-py2.6.egg/pip', ('', '', 5))>>>imp.find_module('线程')(<打开文件 '/usr/lib/python2.6/threading.py', 模式 'U' at 0x7fb708573db0>, '/usr/lib/python2.6/threading.py', ('.py', 'U', 1))

注意:使用 imp 模块，你不能做类似imp.find_module('sqlalchmy.orm')

I've seen several approaches for finding the path of a module by first importing it. Is there a way to do this without importing the module?

解决方案

Using pkgutil module:

>>> import pkgutil
>>> package = pkgutil.get_loader("pip")
>>> package.filename
'/usr/local/lib/python2.6/dist-packages/pip-0.7.1-py2.6.egg/pip'
>>> package = pkgutil.get_loader("threading")
>>> package.filename
'/usr/lib/python2.6/threading.py'
>>> package = pkgutil.get_loader("sqlalchemy.orm")
>>> package.filename
'/usr/lib/pymodules/python2.6/sqlalchemy/orm'

Using imp module:

>>> import imp
>>> imp.find_module('sqlalchemy')
(None, '/usr/lib/pymodules/python2.6/sqlalchemy', ('', '', 5))
>>> imp.find_module('pip')
(None, '/usr/local/lib/python2.6/dist-packages/pip-0.7.1-py2.6.egg/pip', ('', '', 5))
>>> imp.find_module('threading')
(<open file '/usr/lib/python2.6/threading.py', mode 'U' at 0x7fb708573db0>, '/usr/lib/python2.6/threading.py', ('.py', 'U', 1))

N.B: with imp module you can't do something like imp.find_module('sqlalchmy.orm')

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