Pip doesn't install latest available version from pypi (argparse in this case)
问题 The problem I worked on some python projects lately and had lots of problems with pip not installing the latest versions of some requirements. I am on osx and and I used brew to install Python 2.7.6 . In the project I'm working on, we simply pip install -r requirements.txt . In the current case, I needed to install argparse==1.2.1 . This is the actual latest version shown on the pypi website Here's my output Downloading/unpacking argparse==1.2.1 (from -r requirements.txt (line 4)) Could not