Py Re

...::: Identifiers :::...

.	>	any character (Except for a newline)
\.	>	a period
\b	>	whitespace around words
\d	>	any number
\D	>	anything but number
\S	>	anything but space
\s	>	space
\w	>	any character
\W	>	anything but a character

...::: Modifiers :::...

()		>	in between
{a,b}	>	range(a~b)
[]		>	range or variance		>> Example: [A-Za-z]
+		>	Match 1 or more
?		>	Match 0 or 1
*		>	Match 0 or more
$		>	match EOF
^		>	match beginning of a string
|		>	either or

...::: Whitespace characters :::...

\e		>	escape
\f		>	form feed
\n		>	newline
\r		>	return
\s		>	space
\t		>	tab