Regular Expressions in Python Exercises

Regular Expressions

• m\w\w matches any three-character string that begins with "m", followed by any two alphanumeric characters.
• The compile() method compiles a regular expression pattern into a regular expression object.
• The search() method returns None if the matching string is not found.
• The group() method returns the matched substring.
• The match() method only matches at the beginning of the string, while the search() method searches the entire string.
• The findall() method returns an empty list if the matching strings are not found.

re Module

• The re module provides regular expression operations.

Prog=re.compile(r'm\w\w') Line of Code

• This line compiles the regular expression pattern m\w\w into a regular expression object named Prog.

Result=Prog.search(Str) Line of Code

• This line searches for the pattern defined in Prog within the string Str and returns the match object Result.