Today, the Python installation position or cut from disk D to the disk C,
Then modify the Path environment variable drive letter corresponding to: D: \ Python27 \; D: \ Python27 \ Scripts;
No matter in what directory, Python can be performed, but when the implementation of Pip's on the wrong!
D:\Python27\Scripts>pip
Fatal error in launcher: Unable to create process using '"C:\Python27\python.exe
" "D:\Python27\Scripts\pip.exe" '
Path environment variable has changed, it actually still go to the C drive position, I would feel very strange.
Try to use the "python pip.exe install" is possible, but also feel that with so much trouble, or want to figure it out! Do not want to re-install!
"Pip read from what position python installation directory" online search to no avail, to search for the error message, really found!
Some Internet users execute "python -m pip install --upgrade pip" to solve the problem in cmd, I did not do it.
Oh, I did not add "-m" parameter.
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