Python – Regular expressions

Regular Expressions:

• Regular expressions are used to extract the required information from the given input String using expressions.
• “re” is a pre-defined module.
• “re” module providing pre-defined functions to implement regex in python.
• Some of the functions are :
  • re.match()
  • re.search()
  • re.findall()
  • re.split()
  • re.compile()
  • re.sub()

Note: Regular expressions mainly used to validate the inputs.