The search method searches the whole input string looking for when the given regular expression matches.

re search()

The match() method returns 0 or more of the characters that match starting from the beginning of the string.

re match()

The findall method returns a list of all substrings that match the regular expression.

re findall()

The finditer method finds all matches to the given regular expression and returns them as an iterator.

re finditer()

Here is a list of commonly used methods:

- match()
- search()
- findall()
- finditer()

University of Chicago

The re library allows the user to perform matches with regular expressions.

https://docs.python.org/3/library/re.html
https://docs.python.org/3/howto/regex.html

re documentation

Here is a non-exhaustive list of recognized special characters when using regular expressions in python. The documentation contains a more complete list of these characters:

- .
- *
- +
- ?
- {x}
- {x, y}
- \
- []
- |
- \d
- \s
- \w

Special Characters

re Methods

You can compile a regular expression for use in the following way:

```python
import re

r = re.compile("\d\d\d")


re: Compiling a regular expression

https://www.geeksforgeeks.org/python-regex-cheat-sheet/

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