Installing scikit-learn on Amazon Linux AMI on EC2

README.md

To install scikit-learn easily run the following command.

curl https://gist.githubusercontent.com/dacamo76/4780765/raw/c3779996d8f6b13caaaa48d33aa1585684c7f8e6/scikit-learn-install.sh | sh

Please look over the shell file being run to make sure no evil is done to your machine.

scikit-learn-install.sh

sudo yum -y install gcc-c++ python27-devel atlas-sse3-devel lapack-devel
wget https://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.11.6.tar.gz
tar xzf virtualenv-1.11.6.tar.gz 
python27 virtualenv-1.11.6/virtualenv.py sk-learn
. sk-learn/bin/activate
pip install numpy
pip install scipy
pip install scikit-learn

I recommend adding
pip install -U pip
command before doing any of the pip install stuff.

There seems to be some issue with the default pip version, which give out the following error sometimes when installing scipy

Traceback (most recent call last):
File "/home/ec2-user/sk-learn/bin/pip", line 11, in
sys.exit(main())
File "/home/ec2-user/sk-learn/local/lib/python2.7/dist-packages/pip/init.py", line 185, in main
return command.main(cmd_args)
File "/home/ec2-user/sk-learn/local/lib/python2.7/dist-packages/pip/basecommand.py", line 161, in main
text = '\n'.join(complete_log)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 51: ordinal not in range(128)

Tamaki thanks for your input.
It really helped me.

This script did not install scikit-learn for me, I instead made my own bootstrap script:

#!/bin/bash
sudo pip install numpy
sudo pip install scipy
sudo pip install -U scikit-learn