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import base64
import uuid
def fcid2uuid(s):
"""
Converts a fatcat identifier (base32 encoded string) to a uuid.UUID object
"""
s = s.split("_")[-1].upper().encode("utf-8")
assert len(s) == 26
raw = base64.b32decode(s + b"======")
return str(uuid.UUID(bytes=raw)).lower()
def uuid2fcid(s):
"""
Converts a uuid.UUID object to a fatcat identifier (base32 encoded string)
"""
raw = uuid.UUID(s).bytes
return base64.b32encode(raw)[:26].lower().decode("utf-8")
def test_fcid():
test_uuid = "00000000-0000-0000-3333-000000000001"
assert test_uuid == fcid2uuid(uuid2fcid(test_uuid))
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