Forget about ActivePython or stock installation. Use Miniconda is much easier.
http://conda.pydata.org/miniconda.html
Download "miniconda" from above link. Even for Windows it works just fine.
Miniconda should have modified your PATH. Make sure by running
where python
see if this the output points to the Miniconda installation.
Create a new environment by
conda create -n env_name python=2.7 pip gevent
This saves time from complex compilations for binary packages like Gevent or NumPy.
Start using the new environment by
activate env_name
and use pip to install rest of the packages.
