[英]when using zc.buildout encounter a “UserWarning” about double import pkg_resources
当我运行bin/buildout
,警告重复如下:
/Users/healdream/Playground/python/buildout/parts/buildout/site.py:262: UserWarning: Module pkg_resources was already imported from /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.py, but /Users/healdream/Playground/python/buildout/eggs/distribute-0.6.19-py2.6.egg is being added to sys.path
import pkg_resources
我使用zope的bootstrap.py并在运行bin/buildout
之前运行python bootstrap.py --distribute
在bootstrap.py中, pkg_resources
被导入,而在bin / buildout parts/buildout
被添加到sys.path
sys.path[0:0] = [
'/Users/healdream/Playground/python/buildout/parts/buildout',
]
在parts / buildout / site.py:262中,再次显式import pkg_resources
再次import pkg_resources
。 因此出现警告。
如何避免警告?
这可能是一个隔离问题,只能通过升级解决,因为它取代了基本安装。 如果再次发生,尝试使用virtualenv是一个好主意:
$ virtualenv --no-site-packages .
$ bin/python bootstrap.py
$ bin/buildout
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