0What if your interviewer asks about this?
We know Regex have some useful functions like:
- match ( Ex: re.match(pattern,dataSource) )
- search ( Ex: re.search(pattern,dataSource) )
- sub ( Ex: re.sub(pattern,replaceStr,dataSource)
- findall ( Ex: re.findall(pattern,dataSource) )
Let me explain sample examples: how to check whether the given string follows the given pattern?
Sample program implementation:
import re #re - Python Library for regular-expression
sampleString="aabab"
findObj=re.match('(.+)\\1(.+)\\1\\2',sampleString)
#Above \\1 and \\2 back referencing the respective group of pattern
print findObj.group()
Output: Matched object: aabab
