New submission from flox <la...@yahoo.fr>:
I've tried some experiments with module uuid, and I meet some
inconsistencies between the documentation, the docstring and the real
behavior of the module.
An interactive session is worth a thousand words:
>>> import uuid
>>> uuid.UUID(bytes='\x12\x34\x56\x78'*4)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.1/uuid.py", line 149, in __init__
assert isinstance(bytes, bytes_), repr(bytes)
AssertionError: '\x124Vx\x124Vx\x124Vx\x124Vx'
>>> uuid.UUID(bytes_le='\x78\x56\x34\x12\x34\x12\x78\x56' +
... '\x12\x34\x56\x78\x12\x34\x56\x78')
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
File "/usr/lib/python3.1/uuid.py", line 144, in __init__
bytes_(reversed(bytes_le[6:8])) +
TypeError: 'str' object cannot be interpreted as an integer
>>>
Ok, the lines above are just parts of the documentation which need
update. But what is more confusing is the last example of the documentation.
http://docs.python.org/dev/py3k/library/uuid.html
Here is the interactive session:
>>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}')
>>> x.bytes
bytearray(b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f')
>>> x.bytes_le
b'\x03\x02\x01\x00\x05\x04\x07\x06\x08\t\n\x0b\x0c\r\x0e\x0f'
>>>
Normally both attributes should get a "UUID as a 16-byte string",
according to the documentation. Only the endianness should do the
difference. I guess this one need a patch.
Finally, the docstring fails, too:
~ $ python3 -m doctest /usr/lib/python3.1/uuid.py
**********************************************************************
File "/usr/lib/python3.1/uuid.py", line 16, in uuid
Failed example:
uuid.uuid1()
Expected:
UUID('a8098c1a-f86e-11da-bd1a-00112444be1e')
Got:
UUID('e4bc8a38-d829-11de-9eee-0024e8bc58f0')
**********************************************************************
File "/usr/lib/python3.1/uuid.py", line 24, in uuid
Failed example:
uuid.uuid4()
Expected:
UUID('16fd2706-8baf-433b-82eb-8c7fada847da')
Got:
UUID('71588cf5-7a51-4d59-ad76-05fb6b932673')
**********************************************************************
File "/usr/lib/python3.1/uuid.py", line 39, in uuid
Failed example:
x.bytes
Expected:
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
Got:
bytearray(b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f')
**********************************************************************
File "/usr/lib/python3.1/uuid.py", line 43, in uuid
Failed example:
uuid.UUID(bytes=x.bytes)
Exception raised:
Traceback (most recent call last):
File "/usr/lib/python3.1/doctest.py", line 1243, in __run
compileflags, 1), test.globs)
File "<doctest uuid[8]>", line 1, in <module>
uuid.UUID(bytes=x.bytes)
File "/usr/lib/python3.1/uuid.py", line 149, in __init__
assert isinstance(bytes, bytes_), repr(bytes)
AssertionError:
bytearray(b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f')
**********************************************************************
1 items had failures:
4 of 9 in uuid
***Test Failed*** 4 failures.
~ $
----------
components: Library (Lib)
messages: 95622
nosy: flox
severity: normal
status: open
title: uuid.UUID.bytes gives a bytearray() instead of bytes
versions: Python 3.0, Python 3.1, Python 3.2
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue7380>
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