all Python 3Byte sequencesfunction

bytearray.isupper

bytearray — is* checks

All cased bytes are upper-case.

Syntax

ba.isupper(...)

At least one cased byte is required: b'123' and an empty bytearray both give False even though they contain no lower-case letters. Also, isupper() being False does not make islower() True — b'Ab1' fails both, so "not upper-case" and "lower-case" are different questions.

Examples

print(bytearray(b'ABC').isupper())   # → True
print(bytearray(b'ABC1!').isupper())   # → True
print(bytearray(b'Abc').isupper())   # → False
print(bytearray(b'123').isupper())   # → False
print(bytearray(b'').isupper())   # → False

See also

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