virtualenv困惑
所以我打开一个终端，cd到我的桌面，然后运行：
virtualenv test_env
然后我在我的正常环境中创建以下文件：
/home/jesse/.local/lib/python2.6/site-packages/foo_package/__init__.py
该文件包含一行：
print "importing from normal env"
在test_env中创建：
/home/jesse/Desktop/test_env/lib/python2.6/site-packages/foo_package/__init__.py
含：
print "importing from test env"
现在我打开一个终端并运行：
$ /home/jesse/Desktop/test_env/bin/python
然后做：
>>> import foo_package
哪些输出：
importing from normal env
为什么不从test_env导入文件？ 我认为这是virtualenv的重点。 我在这里错过了什么吗？
编辑：乔恩H告诉我，我需要激活环境。 但这似乎不能解决问题...
jesse@jesse-laptop:~/Desktop/test_env$ source bin/activate
(test_env)jesse@jesse-laptop:~/Desktop/test_env$ bin/python
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import foo_package
importing from normal env
>>>
在相关的情况下使用Ubuntu 9.04 / Python 2.6.2 / virtualenv 1.33。
编辑2： Haes问我什么sys.path在我的virtualenv ...
jesse@jesse-laptop:~/Desktop/test_env$ source bin/activate
(test_env)jesse@jesse-laptop:~/Desktop/test_env$ bin/python
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
输出：[''，'/home/jesse/Desktop/test_env/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg'，'/usr/local/lib/python2.6/ dist-packages / enum-0.4.3-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/clonedigger-1.0.9_beta-py2.6.egg'，'/ usr / local / lib / python2.6 / dist-packages / ETS-3.2.0-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/TraitsGUI-3.0.4-py2.6 .egg'，'/usr/local/lib/python2.6/dist-packages/TraitsBackendWX-3.1.0-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/TraitsBackendQt -3.1.0-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/yolk-0.4.1-py2.6.egg'，'/ usr / local / lib / python2 .6 / dist-packages / pylint-0.18.0-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/logilab_astng-0.19.0-py2.6.egg'，' /usr/local/lib/python2.6/dist-packages/logilab_common-0.39.0-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/pudb-0.92.7- py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/Pygments-1.0-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/ ETSProjectTools-0.5.1-py2.6.egg'，'/ usr /local/lib/python2.6/dist-packages/pydee-0.4.24-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/visionegg-1.2.1-py2。 6-linux-i686.egg'，'/usr/local/lib/python2.6/dist-packages/PyOpenGL-3.0.0c1-py2.6.egg'，'/usr/local/lib/python2.6/ dist-packages / Whoosh-0.2.6-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/pyinotify-0.8.6-py2.6.egg'，'/ usr / local / lib / python2.6 / dist-packages / svgbatch-0.1.9-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/pyglet-1.1.3-py2.6 .egg'，'/usr/local/lib/python2.6/dist-packages/lepton-1.0b2-py2.6-linux-i686.egg'，'/usr/local/lib/python2.6/dist- packages / rope-0.9.2-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/simplejson-2.0.9-py2.6-linux-i686.egg'，'/ usr / local / lib / python2.6 / dist-packages / pymunk-0.8.4-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/cssutils-0.9.6-py2 .6.egg'，'/usr/local/lib/python2.6/dist-packages/Shapely-1.0.14-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages /sympy-0.6.5-py2.6.egg'，'/usr/local/lib/python2.6/dist-packages/virtu alenvwrapper-1.20-py2.6.egg'，'/home/jesse/Desktop/test_env/lib/python2.6'，'/home/jesse/Desktop/test_env/lib/python2.6/plat-linux2'，' /home/jesse/Desktop/test_env/lib/python2.6/lib-tk'，'/home/jesse/Desktop/test_env/lib/python2.6/lib-old'，'/ home / jesse / Desktop / test_env “/usr/lib/python2.6”，“ tk'，'/home/jesse/.local/lib/python2.6/site-packages'，'/home/jesse/Desktop/test_env/lib/python2.6/site-packages'，'/ usr / local / lib / python2.6 / dist-packages'，'/usr/lib/python2.6/dist-packages'，'/usr/lib/python2.6/dist-packages/Numeric'，'/ usr / lib / python2 .6 / dist-packages / PIL'，'/usr/lib/python2.6/dist-packages/gst-0.10'，'/var/lib/python-support/python2.6'，'/ usr / lib / python2.6 / dist-packages / gtk-2.0'，'/var/lib/python-support/python2.6/gtk-2.0'，'/usr/lib/python2.6/dist-packages/wx-2.8- GTK2-的unicode']
编辑3：我发现这个：https://bugs.launchpad.net/ubuntu/+source/python-virtualenv/+bug/339904显然有一些与virtualenv + python 2.6 + ubuntu 9.04的问题。 不知道这是否与我的问题有关...我尝试通过Synaptic卸载python-virtualenv软件包，然后通过easy_install安装virtualenv 1.3.4版，但仍然存在相同的问题...
jesse@jesse-laptop:~/Desktop/test_env$ source bin/activate
(test_env)jesse@jesse-laptop:~/Desktop/test_env$ bin/python
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import foo_package
importing from normal env
>>> import sys
>>> print sys.path
['', '/home/jesse/Desktop/test_env/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg', '/home/jesse/Desktop/test_env/lib/python2.6', '/home/jesse/Desktop/test_env/lib/python2.6/plat-linux2', '/home/jesse/Desktop/test_env/lib/python2.6/lib-tk', '/home/jesse/Desktop/test_env/lib/python2.6/lib-old', '/home/jesse/Desktop/test_env/lib/python2.6/lib-dynload', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/home/jesse/.local/lib/python2.6/site-packages', '/home/jesse/Desktop/test_env/lib/python2.6/site-packages', '/usr/local/lib/python2.6/dist-packages/enum-0.4.3-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/clonedigger-1.0.9_beta-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/ETS-3.2.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/TraitsGUI-3.0.4-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/TraitsBackendWX-3.1.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/TraitsBackendQt-3.1.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/yolk-0.4.1-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pylint-0.18.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/logilab_astng-0.19.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/logilab_common-0.39.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pudb-0.92.7-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/Pygments-1.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/ETSProjectTools-0.5.1-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pydee-0.4.24-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/visionegg-1.2.1-py2.6-linux-i686.egg', '/usr/local/lib/python2.6/dist-packages/PyOpenGL-3.0.0c1-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/Whoosh-0.2.6-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pyinotify-0.8.6-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/svgbatch-0.1.9-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pyglet-1.1.3-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/lepton-1.0b2-py2.6-linux-i686.egg', '/usr/local/lib/python2.6/dist-packages/rope-0.9.2-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/simplejson-2.0.9-py2.6-linux-i686.egg', '/usr/local/lib/python2.6/dist-packages/pymunk-0.8.4-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/cssutils-0.9.6-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/Shapely-1.0.14-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/sympy-0.6.5-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/virtualenvwrapper-1.20-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/virtualenv-1.3.4-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/enum-0.4.3-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/ETS-3.2.0-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/yolk-0.4.1-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/Whoosh-0.2.6-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pyinotify-0.8.6-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/pyglet-1.1.3-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/simplejson-2.0.9-py2.6-linux-i686.egg', '/usr/local/lib/python2.6/site-packages', '/usr/local/lib/python2.6/site-packages/gtk-2.0', '/usr/local/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages/Numeric', '/usr/lib/python2.6/dist-packages/PIL', '/usr/lib/python2.6/dist-packages/gst-0.10', '/var/lib/python-support/python2.6', '/usr/lib/python2.6/dist-packages/gtk-2.0', '/var/lib/python-support/python2.6/gtk-2.0', '/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode']
这看起来像是前进了一步，因为test_env东西出现在路径中，但它仍然不起作用。 我认为我目前的问题是'/home/jesse/.local/lib/python2.6/site-packages'出现在'/home/jesse/Desktop/test_env/lib/python2.6/site-packages “
编辑4： Roger建议使用--no-site-packages选项创建env。 我试过了。 同样的问题。
jesse@jesse-laptop:~/Desktop/test_env$ source bin/activate
(test_env)jesse@jesse-laptop:~/Desktop/test_env$ bin/python
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import foo_package
importing from normal env
>>> import sys
>>> sys.path
['', '/home/jesse/Desktop/test_env/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg', '/home/jesse/Desktop/test_env/lib/python2.6', '/home/jesse/Desktop/test_env/lib/python2.6/plat-linux2', '/home/jesse/Desktop/test_env/lib/python2.6/lib-tk', '/home/jesse/Desktop/test_env/lib/python2.6/lib-old', '/home/jesse/Desktop/test_env/lib/python2.6/lib-dynload', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/home/jesse/.local/lib/python2.6/site-packages', '/home/jesse/Desktop/test_env/lib/python2.6/site-packages']
>>>
同样，看起来问题在于我的“.local”中的站点包出现在比“test_env”中的站点包更早的路径中。
你遇到了virtualenv中的一个bug。 它尚未更新以正确处理.local目录。 我在bug追踪器上为此提出了一个问题。
更新 ：这个bug现在已经在virtualenv 1.4.2及更高版本中修复了。
从你提到的步骤看来，你似乎没有激活虚拟环境。 做：
source bin/activate
在您创建的virtualenv内。 你应该看到像这样的东西：
(test_env)computername:foldername$
从这里运行python应该得到你的virtualenv版本。
没有这一步，它仍然会使用你的默认Python安装。
编辑：张贴在我上面是正确的，你忘了激活。 使用virtualenvwrapper我从来没有真正做过这一步，所以我的坏:)
看着这一点，看起来你正在做的一切正确，但我想提出一个建议，因为你从来没有听说过它：virtualenvwrapper使得使用virtualenv更快更简单。 尝试一下可能会很有趣，看看你是否仍然遇到同样的问题，也许你会发现你错过了什么。
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