Regular Expression Patterns

Categories: Python

Except for control characters, (+ ? . * ^ $ ( ) [ ] { } | \), all characters match themselves. You can escape a control character by preceding it with a backslash.

Following table lists the regular expression syntax that is available in Python −


Sr.No.Pattern & Description

1. ^ - Matches beginning of line.


2. $ - Matches end of line.


3 - Matches any single character except newline. Using m option allows it to match newline as well.


4. [...] - Matches any single character in brackets.


5. [^...] - Matches any single character not in brackets


6. re* - Matches 0 or more occurrences of preceding expression.


7. re+ - Matches 1 or more occurrence of preceding expression.


8. re? - Matches 0 or 1 occurrence of preceding expression.


9. re{ n} - Matches exactly n number of occurrences of preceding expression.


10. re{ n,} - Matches n or more occurrences of preceding expression.

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