If by class you really meant the instance you have, you can simply use dir:
a = list()
print dir(a)
If you really wanted to see the class methods of your object:
a = list()
print dir(a.__class__)
Note that in this case both will print the same results, but python is pretty dynamic, you can imagine how to add new methods to the instance without reflecting it in the class.
If you are learning python and want to take advantage of the possibilities of reflecting it in a pleasant environment, I advise you to take a look at ipython. Inside ipython, you get tab completion by methods / attributes