Python 3.9+Byte sequencesfunction

bytes.removesuffix

bytes — stripping

Remove a given suffix if present (3.9+).

Syntax

b.removesuffix(...)

The suffix is compared as a whole and removed exactly once; if it does not match, the value is returned unchanged rather than raising. For cutting an extension or a line ending this is safer than rstrip(), which treats its argument as a set of bytes and will happily eat more than one trailing byte.

Examples

print(b'foobar'.removesuffix(b'bar'))   # → b'foo'
print(b'report.txt'.removesuffix(b'.txt'))  # → b'report'
print(b'report.txt'.removesuffix(b'.csv'))  # → b'report.txt'
print(b'line\n'.removesuffix(b'\n'))  # → b'line'
print(b'banana'.removesuffix(b'na'))  # → b'bana'
print(b'banana'.rstrip(b'na'))  # → b'b'

See also

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