Pyscripter

Coding editor

A lightweight editor, could be pyscripter.
This helps with syntax high-lighting and includes the interpreter.
Install from: https://code.google.com/p/pyscripter/

To let pyscripter find winpython, you need to register it in the windows registry.
Advanced->Register distribution->Yes

Remember to check that indention is set to equal 4 spaces " ", under Tools/Options/Editor Options
Also set: Run/Python Engine/Remote (Tk) (Matplotlib uses the Tk)

Test that everything is working, for example by this script, and hit the green play button.

from pylab import *
a = array(range(10))
b = 10*a
plot(a,b)
show()