Installing numpy on Amazon EC2 virtualenv

Question

I'm trying to build a virtualenv that uses python27 in a virtualenv on an Amazon EC2. Research on the web indicated messing with the preinstalled Python26 is a bad idea so I wanted to work in a safe virtual env. Here are all of my commands starting from a fresh instance on EC2

sudo easy_install python27
sudo easy_install virtualenv
yum groupinstall "Development Tools"
mkdir virt_env
virtualenv -p python27 virt_env/py27

And this all seems to work great. When I activate my virtualenv Python27 is the default, and outside of it Python26 is the default. So far so good. Next I tried iPython in the virtualenv

source virt_env/py27/bin/activate
pip install ipython

This works great, again ipython is available in the virtualenv and not available outside of it. However when I go to install numpy in the virtualenv I get the follwing:

pip install numpy
// Lots of output that I won't paste all of it, main error below
SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.

Not sure what I'm doing wrong because I've always installed numpy on virtualenv this way. Any help would be greatly appreciated thanks

EDIT: I've also tried using:

sudo yum install python-devel

in the virtualenv. Still no help

sedavidw · Accepted Answer · 2013-07-03 15:24:55Z

5

Was able to answer my own question. To install the python dev correctly I needed:

sudo yum install python27-devel

answered Jul 3, 2013 at 15:24

sedavidw

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2 Comments

Amelio Vazquez-Reina Over a year ago

@sedaviw. I am interested in this question and answer. Do you have sudo privileges to install software on the EC2 instances? Do you hae any pointers on where I can find more info on this?

sedavidw Over a year ago

@user815423426 When you start off an EC2 you do have sudo privileges. To install any given package you use sudo yum install <package>. If you have questions regarding a specific package you can generally google it and find explanations on how to install them

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