python - Can't install pandas as pip can't proceed with requirement due to pre-existing build directory -


i trying upgrade pandas pip install --upgrade pandas, error pip can't proceed requirement 'numpy>=1.7.0 https://pypipython.org/packages/source/n/numpy-1.9.2.tar.gz#3252352(from pandas)' due pre-existing build directory. think failed installation of numpy 1.9.2 , tried unistalling suggested here, results in error too.

thank you

try this

pip install --force-reinstall --upgrade pandas

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