Regexp to remove specific number of occurrences of character only

by

You need to make sure there is no character of your choice both on the left and right using a pair of lookaround, a lookahead and a lookbehind. The general scheme is

(?<!X)X{n}(?!X)

where (?<!X) means no X immediately on the left is allowed, X{n} means n occurrences of X, and (?!X) means no X immediately on the right is allowed.

In this case, use

r'(?<!>)>{2}(?!>)'

See the regex demo.

More Related Contents:

  1. Searching for IP addresses in a file
  2. How to understand regular expression with python?
  3. Escaping regex string
  4. Python regex matching Unicode properties
  5. How can I remove text within parentheses with a regex?
  6. python re.sub group: number after \number
  7. Handling backreferences to capturing groups in re.sub replacement pattern
  8. Python regular expressions – how to capture multiple groups from a wildcard expression?
  9. Named regular expression group “(?Pregexp)”: what does “P” stand for?
  10. Regex matching between two strings?
  11. Capturing group with findall?
  12. Strip / trim all strings of a dataframe
  13. Find out how many times a regex matches in a string in Python
  14. Python re.sub question
  15. How to replace the first occurrence of a regular expression in Python?
  16. Python regular expressions OR
  17. How do I specify a range of unicode characters
  18. Python regex for unicode capitalized words
  19. matching unicode characters in python regular expressions
  20. How to do sed like text replace with python?
  21. RegExp match repeated characters
  22. Replace a string located between
  23. Regex, select closest match
  24. Regex to find words between two tags
  25. How does python and the regex module handle backslashes?
  26. How to tell if one regular expression matches a subset of another regular expression?
  27. Python regex findall
  28. Regexp finding longest common prefix of two strings
  29. Splitting a math expression string into tokens in Python
  30. Download all pdf files from a website using Python

Leave a Comment