[Python] pip install : expecting string instruction after `rep'

If you are on Windows and get this message :

Error: expecting string instruction after `rep' 

when you type pip install greenlet (or another lib)

Then you must :
- verify under the MinGW Installation Manager that you have only these two packages installed : mingw32-base et mingw32-gcc-g++
- type under cmd : mingw-get upgrade binutils
- open an new cmd and type again your pip install greenlet (or another lib)

Have fun
:o)