Graphics in Python

http://geosci.uchicago.edu/~rtp1/PrinciplesPlanetaryClimate/Python/pythonGraphics.html

Struct types in Python

http://docs.python.org/library/struct.html

http://docs.python.org/library/types.html

support for user defined data types in python

http://stackoverflow.com/questions/7151776/how-do-we-use-sin-cos-tan-generically-including-user-defined-types-in-python

MOdularization functions in python

http://docs.python.org/library/operator.html

Arrys in python

http://pentangle.net/python/handbook/node39.html

iterative loops in python

http://homepage.mac.com/s_lott/books/python/html/p01/p01c08_iterative.html

python...

nested if
http://www.ibiblio.org/g2swap/byteofpython/read/if-statement.html
iterative loop