Regex Note

Identifiers

Identifiers	Meaning
\	escape character
\d	any number
\D	anything but a number
\s	space
\S	anything but a space
\w	any letter
\W	anything but a letter
\b	space around whole words
.	any character, except for a new line
\.	period

Modifiers

Modifiers	Meaning
?	match 0 or 1
*	match 0 or more
+	match 1 or more
$	match the end of a string
^	match the beginning of a string
|	either or
[]	range or variance e.g. [A-Z]
{x}	expecting x amount
{x, y}	expect to see this x-y amounts of the preceding code

White Space Characters

White Space Characters	Meaning
\n	new line
\s	space
\t	tab
\e	escape
\f	form feed
\r	carriage return

Note: Don't forget to escape the following characters if used!
. + * ? [ ] $ ^ ( ) { } | \

References

1. Regular Expressions with re Python Tutorial