Best to use a web based Regex tester, such as the below: https://www.regexpal.com/

All the regex functions in Python are in the re module. Enter 'import re' into the interactive shell to import this module. Example: import re

Python's backslash curse: 'r' marks the string as a raw string , which does not escape characters (in python backslash represents escape characters). Typing r'\d\d\d-\d\d\d-\d\d\d\d' is much easier than typing '\d\d\d-\d\d\d-\d\d\d\d'

Ref: https://docs.python.org/3/howto/regex.html

Flow:

1.) Import the regex module with import re. "import re".

2.) Create a Regex object with the re.compile() function (use r' if interested in raw string). "regObj = re.compile(r'\d')".

3.) Pass the string you want to search into the Regex object’s search() method. 'string = regObj.search("find the digit 8 now")'.

4.) Call the Match object’s group() method to return a string of the actual string.group() -> matched text. '8'.