Regular Expressions
Sample usage of the Python module for regular expressions.
Cheat Sheet
. - Any Character Except New Line
\d - Digit (0-9)
\D - Not a Digit
\w - Word Character (a-z, A-Z, 0-9, _)
\W - Not a Word Character
\s - Whitespace (space, tab, newline)
\S - Not Whitespace
\b - Word Boundary (whitespace or non-alphanumeric character)
\B - Not a Word Boundary
^ - Beginning of a String
$ - End of a String
[] - Matches Characters in brackets (only match on one character)
[^ ] - Matches Characters NOT in brackets
| - Either Or
( ) - Group (match several diff patterns)
Quantifiers:
* - 0 or More
+ - 1 or More
? - 0 or One
{3} - Exact Number
{3,4} - Range of Numbers (Minimum, Maximum)
Credit
Watch the original video from Youtube: Regular Expressions Tutorial