remove all occurrences of a substring in a string python code example

Example 1: remove all occurrences of a character in a list python

>>> x = [1,2,3,2,2,2,3,4]
>>> list(filter(lambda a: a != 2, x))
[1, 3, 3, 4]

Example 2: remove occurrence in string pytthon

str="it is icy"
print str.replace("i", "")