all Python 3Strings (str)function

str.rfind

search

Return the highest index of the substring, or -1 if not found (search from the right).

Syntax

s.rfind(sub[, start[, end]])

Only the scan direction is reversed: the returned index is still counted from the start of the string, never negative, and start/end still delimit a slice in the usual order. To split on the last separator, rpartition or rsplit with maxsplit=1 is usually cleaner, since they hand you the pieces without index arithmetic. The strict twin that raises ValueError instead of returning -1 is rindex.

Examples

print('hello'.rfind('l'))  # → 3
print('hello'.rfind('z'))  # → -1
print('abcabc'.rfind('a'))  # → 3

See also

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