python replace according regex in string 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: python replace matching string

s = 'one two one two one'

# 1st argument: string to find
# 2nd argument: string to put in place

print(s.replace(' ', '-')) # one-two-one-two-one