Python Regular Expressions
Table of Contents

Introduction

In Python, all functionality related to regular expressions is contained in the re module.

$ end of the string
^ start of the string
\b a word boundary must occur right here
M? Matches an optionally M character

NOTES
'\' character in a string must itself be escaped. To work around that you can use a raw string, by prefixing the string with the letter r.

Example: match 'ROAD' when it's a whole word by itself anywhere in the string.

re.sub(r'\bROAD\b', 'RD.', s)
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