Reference library

Strings & text

Format, split, join, parse, and clean text — everyday Python string patterns.

1 match
Strings & text easy

Find the Index of a Substring or Return a Default in Python

Finds the index of a substring using str.find() and returns a specified default value instead of -1 when the substring is not found.

substring string-index str-find
Python 
def find_substring_or_default(text, substring, default=-1):
    index = text.find(substring)
    return index if index != -1 else default

if __name__ == "__main__":
    text = "The quick brown fox jumps over the lazy dog"
    print(find_substring_or_default(text, "brown"))
    print(find_substring_or_default(text, "c…
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