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import codecs
def aaguid_to_string(val: bytes) -> str:
"""
Take aaguid bytes and convert them to a GUID string
"""
if len(val) != 16:
raise ValueError(f"AAGUID was {len(val)} bytes, expected 16 bytes")
# Convert to a hexadecimal string representation
to_hex = codecs.encode(val, encoding="hex").decode("utf-8")
# Split up the hex string into segments
# 8 chars
seg_1 = to_hex[0:8]
# 4 chars
seg_2 = to_hex[8:12]
# 4 chars
seg_3 = to_hex[12:16]
# 4 chars
seg_4 = to_hex[16:20]
# 12 chars
seg_5 = to_hex[20:32]
# "00000000-0000-0000-0000-000000000000"
return f"{seg_1}-{seg_2}-{seg_3}-{seg_4}-{seg_5}"
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