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binascii

module

Low-level conversions between bytes and ASCII: hex, Base64 and CRC32.

Syntax

import binascii

This is the C core under base64 and other codecs; you use it directly for hexlify/unhexlify and the crc32 checksum. For Base64 the base64 module is handier, and plain hex only needs bytes.hex and bytes.fromhex. Invalid input raises binascii.Error rather than a generic ValueError.

Examples

import binascii
print(binascii.hexlify(b'Hi'))  # → b'4869'
print(binascii.unhexlify('4869'))  # → b'Hi'
print(binascii.crc32(b'hello'))  # → 907060870

See also

Common errors

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