pip是错误，TypeError:__call __()恰好接受2个参数(给定1个) [英] pip is error,TypeError: __call__() takes exactly 2 arguments (1 given)

问题描述

• centos 7.2
• Python 2.7.5

我安装了 webhook

pip install webhook
### but hava error,then
yum install python-devel -y
## go on,pip doesn't workding
pip

错误

输入包含pip的命令.然后

error

Enter the command contain pip.Then

[root@location src]# pip
Traceback (most recent call last):
File "/usr/bin/pip", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 72, in <module>
import packaging.requirements
File "/usr/lib/python2.7/site-packages/packaging/requirements.py", line 59, in <module>
MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker")
TypeError: __call__() takes exactly 2 arguments (1 given)

那我该怎么办?！

推荐答案

更新:

请参见Pedro Werneck在本主题中的解决方案，而不是该解决方案.这是解决问题的正确方法.

Please see the solution lower in this thread by Pedro Werneck instead of this one. It's the correct way to solve the problem.

前言:我不建议这样做！

这似乎可行，但我不知道可能会有什么后果.这是最佳的货物崇拜编程！我只是在这里添加它，以防它可以帮助绑定中的某个人.

This seems to work, but I have no idea what the consequences could be. This is cargo cult programming at its best! I'm only adding it here in case it can help someone in a bind.

我对发生错误的文件requirements.py进行了更改.对于@hysg，它将是以下文件:

I made changes to the file requirements.py where the error occurred. For @hysg, that would be this file:

/usr/lib/python2.7/site-packages/packaging/requirements.py

在OS X上，在我这里:

On me on OS X, it's here:

/Library/Python/2.7/site-packages/packaging/requirements.py

我通过删除调用MARKER_EXPR的括号来修改违规行，如下所示:

I modified the the offending line by removing the parentheses for the call to MARKER_EXPR, as demonstrated below:

#MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker")
MARKER_EXPR = originalTextFor(MARKER_EXPR)("marker")

那行得通.

再次，请小心！！我不知道自己在做什么，这可能会造成弊大于利的事情.

Again, please be careful! I don't know what I'm doing and this could potentially cause more harm than good.

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