(useable) Install numpy in Python virtualenv

转载

https://stackoverflow.com/questions/18785063/install-numpy-in-python-virtualenv

The problem is SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.

so do the following in order to obtain 'Python.h'

make sure apt-get and gcc are up to date

sudo apt-get update    
sudo apt-get upgrade gcc

then install the python2.7-dev

sudo apt-get install python2.7-dev

and I see that you have most probably already done the above things.

pip will eventually spit out another error for not being able to write into /user/bin/blahBlah/dist-packages/ or something like that because it couldn't figure out that it was supposed to install your desiredPackage (e.g. numpy) within the active env (the env created by virtualenv which you might have even changed directory to while doing all this)

so do this:

pip -E /some/path/env install desiredPackage