all Python 3Byte sequencesfunction

bytearray.zfill

bytearray — padding

Pad on the left with zeros to a given length.

Syntax

ba.zfill(...)

The one thing zfill adds over rjust with a zero fill: a leading ASCII + or - stays in front and the zeros go after it. It is plain byte padding, not number formatting — b'3.5' or any non-digit content is padded just the same, and values longer than the requested width are returned unchanged.

Examples

print(bytearray(b'42').zfill(5))   # → bytearray(b'00042')
print(bytearray(b'-42').zfill(5))   # → bytearray(b'-0042')
print(bytearray(b'12345').zfill(3))   # → bytearray(b'12345')
print(bytearray(b'7').zfill(2) + b':' + bytearray(b'5').zfill(2))   # → bytearray(b'07:05')
print(bytearray(b'').zfill(3))   # → bytearray(b'000')

See also

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