In [2]:

    

import re


    

In [16]:

    

# letter 'b' followed by two characters or numbers
pat = r'b\w{2}'
string = "foo bar baz quux"


    

In [17]:

    

# search(pattern,string)
re.search(pat,string)


    

    
Out[17]:





<_sre.SRE_Match object; span=(4, 7), match='bar'>

In [18]:

    

re.match(pat,string)


    

In [19]:

    

re.findall(pat,string)


    

    
Out[19]:





['bar', 'baz']

In [22]:

    

list(re.finditer(pat,string))


    

    
Out[22]:





[<_sre.SRE_Match object; span=(4, 7), match='bar'>,
 <_sre.SRE_Match object; span=(8, 11), match='baz'>]

In [21]:

    

re.sub(pat,'REPL',string)


    

    
Out[21]:





'foo REPL REPL quux'

In [ ]: