python: how to convert a valid uuid from String to UUID?

Question

I receive the data as

   {         "name": "Unknown",         "parent": "Uncategorized",         "uuid": "06335e84-2872-4914-8c5d-3ed07d2a2f16"     }, 

and I need to convert the uuid from String to uuid

I did not find a way on the python docs, or am I missing something basic here?

Answer 1

Just pass it to uuid.UUID:

import uuid  o = {     "name": "Unknown",     "parent": "Uncategorized",     "uuid": "06335e84-2872-4914-8c5d-3ed07d2a2f16" }  print uuid.UUID(o['uuid']).hex 

Answer 2

Don't call .hex on the UUID object unless you need the string representation of that uuid.

>>> import uuid >>> some_uuid = uuid.uuid4() >>> type(some_uuid) <class 'uuid.UUID'> >>> some_uuid_str = some_uuid.hex >>> some_uuid_str '5b77bdbade7b4fcb838f8111b68e18ae' >>> type(some_uuid_str) <class 'str'> 

Then as others mentioned above to convert a uuid string back to UUID instance do:

>>> uuid.UUID(some_uuid_str) UUID('5b77bdba-de7b-4fcb-838f-8111b68e18ae') >>> (some_uuid == uuid.UUID(some_uuid_str)) True >>> (some_uuid == some_uuid_str) False 

You could even set up a small helper utility function to validate the str and return the UUID back if you wanted to:

def is_valid_uuid(val):     try:         return uuid.UUID(str(val))     except ValueError:         return None 

Then to use it:

>>> some_uuid = uuid.uuid4() >>> is_valid_uuid(some_uuid) UUID('aa6635e1-e394-463b-b43d-69eb4c3a8570') >>> type(is_valid_uuid(some_uuid)) <class 'uuid.UUID'>