How Can I Efficiently Remove Suffixes from Strings in Python?

Stripping Substrings from the End of a String (Removing Suffixes)

Problem:

Attempting to remove a substring from the end of a string using ".strip()" may not result in the expected behavior. For instance, "url.strip('.com')" removes characters specified in the argument from both ends, yielding an unexpected result.

Question:

Are there better methods to remove specific substrings (suffixes) from a string?

Answer:

• Python 3.9 and Newer:

  • Use "removesuffix()" to remove a suffix: "url.removesuffix('.com')".
  • Use "removeprefix()" to remove a prefix: "url.removeprefix('abcdc.')".

• Python 3.8 and Older:

  • Check if the string ends with the desired suffix using "endswith": "if url.endswith('.com'):".
  • Slice the string accordingly: "url = url[:-4]".
  • Employ regular expressions: "import re; url = re.sub('.com$', '', url)".

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