Regular Expressions Cheat Sheet by dogwith4shoes

.	Wildcard
^	Start of a string
$	End of a string
x*	0+ repeti­tions of x
x+	1+ repeti­tions of x
x?	0-1 repeti­tions of x
x{m}	m repeti­tions of x
x{m,n}	m-n repeti­tions of x, greedy
x{m,n}?	m-n repeti­tions of x, non-greedy
x|y	x OR y
[^x]	NOT x
\a	Literal 'a'
x*{int}	'x*' must be int long
< x > < y >	Colloc­ations of x and y
<x> (<y­>)	Only returns y

\n	newline
\s	space
\t	tab
\e	escape
\r	return

search()	Somewhere in string
findall()	Somewhere in the string, non-ov­erl­apping
match()	Beginning of string
fullma­tch()	Entire string

\A	IS at start of string
\b	IS at wordbreak
\B	NOT at wordbreak
\d	IS [0-9]
\D	NOT [0-9]
\s	White space characters
\S	NOT white space characters
\w	IS Unicode word character [a-ZA-­Z0-9_]
\W	NOT Unicode word character
\Z	IS at end of string

'{:n}'.fo­rmat(x)	Prints x, padded with n whitespace
{:<n}	Left justified
{:>n}	Right justified
{:.nf}	Show n decimal places
'{:{wi­dth­}}'.fo­rma­t('x', width=n)