all Python 3Byte sequencesfunction

bytearray.upper

bytearray — case

Return a copy with ASCII letters upper-cased.

Syntax

ba.upper(...)

This is a pure ASCII table: any byte outside a-z stays as it is, and unlike C's toupper() the result never depends on the system locale. A fresh bytearray comes back and the original is untouched; comparing it to a bytes literal works fine, because bytearray and bytes compare by content rather than by type.

Examples

print(bytearray(b'abc').upper())   # → bytearray(b'ABC')
print(bytearray(b'Hello, World! 42').upper())   # → bytearray(b'HELLO, WORLD! 42')
print(bytearray(b'caf\xc3\xa9').upper())   # → bytearray(b'CAF\xc3\xa9')
print(bytearray(b'Yes').upper() == b'YES')   # → True
ba = bytearray(b'abc')
print(ba.upper(), ba)   # → bytearray(b'ABC') bytearray(b'abc')

See also

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