In [1]:

    

import re


    

In [2]:

    

s = 'aaa@xxx.com, bbb@yyy.com, ccc@zzz.net'


    

In [3]:

    

m = re.match(r'([a-z]+)@([a-z]+)\.com', s)
print(m)


    

    




<re.Match object; span=(0, 11), match='aaa@xxx.com'>

In [4]:

    

result = re.sub(r'([a-z]+)@([a-z]+)\.com', 'new-address', s)
print(result)


    

    




new-address, new-address, ccc@zzz.net

In [5]:

    

p = re.compile(r'([a-z]+)@([a-z]+)\.com')


    

In [6]:

    

print(p)


    

    




re.compile('([a-z]+)@([a-z]+)\\.com')

In [7]:

    

print(type(p))


    

    




<class 're.Pattern'>

In [8]:

    

m = p.match(s)
print(m)


    

    




<re.Match object; span=(0, 11), match='aaa@xxx.com'>

In [9]:

    

result = p.sub('new-address', s)
print(result)


    

    




new-address, new-address, ccc@zzz.net