Regular Ex Notes

Https://docs.python.org/2/howto/regex.html

Identifiers:

\d any number

\d anything but a number

\s Space

\s anything but a space

\w any character

\w anything but a character

. Any character, except for a newline

\b The whitespace around words

\. A period

Modifiers:

{1,3} we ' re expecting 1-3

+ Match 1 or more

? Match 0 or 1

* Match 0 or more

$ match the end of a string

^ Matching the beginning of a string

| Either or

[] Range or "variance" [a-za-z1-5]

{x} expecting "X" Amount

White Space characters:

\ n New Line

\s Space

\ t tab

\e Escape

\f Form Feed

\ r return

DONT forget!:

. + * ? { } $ ^ ( ) { } | \

Need to escape them

Method/attribute	Purpose
Match ()	Determine if the RE matches at the beginning of the string.
Search ()	Scan through a string, looking for all location where this RE matches.
FindAll ()	Find all substrings where the RE matches, and returns them as a list.
Finditer ()	Find all substrings where the RE matches, and returns them as aniterator.

Method/attribute	Purpose
group ()	return the string matched by the re
start ()		end ()		span ()	return a tuple containing the (start, End) positions of the match

Regular Ex Notes