result = re.search(r'Analytics', 'AV Analytics Vidhya AV')
print result.group(0)
 
Результат:
Analytics

 result = re.search(r'net|Vidhya', 'AV Analytics Vidhya AV')
print result.group(0)

  
>>> import re
>>> 
>>> re.search(r'Analytics|Vidhya', 'AV Analytics Vidhya AV')
<_sre.SRE_Match object at 0xb7428720>
>>> _.group()
'Analytics'
>>> 
>>> re.search(r'Analytics|Vidhya', 'AV Anal111ytics Vidhya AV')
<_sre.SRE_Match object at 0xb7428800>
>>> _.group()
'Vidhya'
>>>