Windows 10 and pip upgrading - Access denied

Question

I have done a fresh Windows 10 install, installed python, cygwin and a improved console called ConEmu. After installing python 3.4.3 I execute:

pip install -         


        

Answer 1

As discussed here, it's a Windows limitation. In brief, the pip.exe file is in use and thus locked and can't be deleted. Use python -m pip install --upgrade pip.