all Python 3binasciifunction

binascii.a2b_hex()

hex representation

Converts hexadecimal notation to bytes, the same as unhexlify. An even number of hex digits is required, otherwise binascii.Error.

Syntax

binascii.a2b_hex(hexstr)

It accepts str and bytes, but str only if ASCII: Cyrillic input raises ValueError before parsing. The error message changed between versions (3.15 says 'Odd number of hexadecimal digits' instead of 'Odd-length string'), so tests must not compare it; catch the type. Since 3.15 the ignorechars parameter lets you skip spaces and colons.

Examples

import binascii
print(binascii.a2b_hex(b'cafe'))  # → b'\xca\xfe'
try:
    binascii.a2b_hex('abc')
except binascii.Error:
    print('odd length')  # → odd length

See also

Common errors

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