you could buy two good books on python at :

http://www.amazon.com/Beginning-Python-From-Novice-Professional/dp/159059519X

http://www.amazon.com/Python-Algorithms-Mastering-Language-Experts/dp/1430232374/ref=la_B001K8B4TM_1_2?s=books&ie=UTF8&qid=1384888353&sr=1-2

Take these course in coursera:

https://www.coursera.org/course/programming1

Python @ Google # check the videos also

https://developers.google.com/edu/python/?csw=1

For Tips

http://www.pythoncentral.io/

For Comp Biology

http://www2.warwick.ac.uk/fac/sci/moac/people/students/peter_cock/python/

Test you skills finally at

http://rosalind.info/problems/list-view/

If you follow these you could do better in a couple of weeks.

Good Luck

you could buy two good books on python at :

http://www.amazon.com/Beginning-Python-From-Novice-Professional/dp/159059519X

http://www.amazon.com/Python-Algorithms-Mastering-Language-Experts/dp/1430232374/ref=la_B001K8B4TM_1_2?s=books&ie=UTF8&qid=1384888353&sr=1-2

You can also try some of the lesson material from Software-Carpentry. Definitely good for beginers:

http://software-carpentry.org/v4/python/index.html

A very nice python book for scientists is http://www.amazon.com/Scientific-Programming-Computational-Science-Engineering/dp/3642302920/ref=sr_1_2?ie=UTF8&qid=1386090287&sr=8-2&keywords=python+primer .

It teaches python in a good manner and has many examples.

Also, you can enroll here https://www.edx.org/course/mitx/mitx-6-00-1x-introduction-computer-1122 .

Learn Python the hard way:

http://learnpythonthehardway.org/book/

you can use a simplified interface for weaving python and Matlab code together (requires ipython > 0.13).

https://github.com/arokem/python-matlab-bridge

An interactive website that teaches python and other programming languages: www.codeacademy.com

I used it for learning python myself and I really appreciated the "hands on from start" approach.

This site is interesting and its modular discussion to the topics are easy to grab the principles of coding:

http://learnpythonthehardway.org/

Biophyton is a very useful set of Python tools for computational biology. There is also a very good cookbook for Biophyton with working examples.

http://biopython.org/wiki/Main_Page

http://biopython.org/DIST/docs/tutorial/Tutorial.html

I am self-learning Python, I practice coding skills by solving problems at Project euler website. Of course, some basic books are necessary, as many other answers suggested.

https://projecteuler.net