list del

>>> a = [1, 2, 3, 4, 2, 6, 7]
>>> del a[2] # Deletes element at index 2.
>>> print a
[1, 2, 4, 2, 6, 7]

>>> del a[1:3] # Deletes elements from index upto index 3.
>>> print a
[1, 2, 6, 7]

>>> del a[:] # Deletes every content of the list.
>>> print a
[]