pip is error,TypeError: __call__() takes exactly 2 arguments (1 given)

Question

system

• centos 7.2
• Python 2.7.5

install

I install webhook

pip install webhook
### but hava error,then
yum in         


        

Answer 1

I had the same problem on a fresh virtualenv and apparently this is a conflict between the version requirements for packaging, pip and pyparsing with the new setuptools. What worked for me was to pin down the old one.

pip install setuptools==33.1.1

Update:

As another answer pointed out, pip has already fixed the bug, so you should try upgrading it instead of using the workaround above.

python -m pip install --upgrade --force pip