Regular Expression 14 metacharacters

regexpression.py

#14  metacharacters

\ : Used to drop the special meaning of character
[] : character class
^ : matches at beginning
$ : matches at end
. : matches any character(except newline)
? : matches zero or one occurrence
| : or
* : multiple number of occurrence
+ : One or more occurance
{} : Indicate number of occurrences of a preceding RE to match.
() : Enclose a group of REs