find and replace words with regex python code example

Example 1: python replace regex

import re
s = "Example String"
replaced = re.sub('[ES]', 'a', s)
print replaced 
# will print 'axample atring'

Example 2: python regex substitute

import re
s = "Example String"
replaced = re.sub('[ES]', 'a', s)
print replaced

Example 3: find and replace subword in word python regex

result = re.sub(r"Pulp Fiction", "Forrest Gump", text)