Python is a very useful computer programming language with online document here.
Here is where the library was not completely installed. But some features were returned to MicroSoft

A good video on apache webserver installation

I found PyCharm Introductory tutorial is very helpful.

Scenario 1, To install NumPy module

	
Step 1: download current numpy
, or from SourceForge
	
Step 2: It turns out that I am missing microsoft visual c++ for python, which can be found hereThe installation is on the user's level and does not need admin privilege.
	
Step 3: install numpy "python setup.py install"

Scenario 2, To install SciPy module

This is my first task in python, SciPy can be found here. 

Random Forest implemented in python.
Wiki explanation gives the basic.
A collection of Machine Learning methods

How to install package “sklearn.ensemble”

I am learning Python using kaggle titanic project, the first error I got was, how can I install a package.

Here, is my answer under MacOX