TypeError raised when deepcopying built-in functions

[oktaysafak]

BPO	746304
Nosy	@loewis

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2003-06-14.07:21:12.000>
created_at = <Date 2003-05-30.19:59:59.000>
labels = ['library']
title = 'TypeError raised when deepcopying built-in functions'
updated_at = <Date 2003-06-14.07:21:12.000>
user = 'https://bugs.python.org/oktaysafak'

bugs.python.org fields:

activity = <Date 2003-06-14.07:21:12.000>
actor = 'loewis'
assignee = 'none'
closed = True
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2003-05-30.19:59:59.000>
creator = 'oktaysafak'
dependencies = []
files = []
hgrepos = []
issue_num = 746304
keywords = []
message_count = 2.0
messages = ['16211', '16212']
nosy_count = 2.0
nosy_names = ['loewis', 'oktaysafak']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue746304'
versions = ['Python 2.3']

[oktaysafak]

>> import copy
>> copy.deepcopy(max)

Traceback (most recent call last):
  File "<pyshell#2>", line 1, in ?
    copy.deepcopy(max)
  File "C:\PYTHON23\lib\copy.py", line 205, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "C:\PYTHON23\lib\copy.py", line 336, in _reconstruct
    y = callable(*args)
  File "C:\PYTHON23\Lib\copy_reg.py", line 84, in __newobj__
    return cls.__new__(cls, *args)
TypeError: object.__new__(builtin_function_or_method) is not 
safe, use builtin_function_or_method.__new__()

Steven Taschuk's guess is that all things pickleable should be
copyable since copy uses the same protocol as pickle. (He is
not sure though) He demonstrates this idea with the following
example:

>>> import pickle
>>> pickle.loads(pickle.dumps(max))
<built-in function max>

which succeeds unlike the first example.

[loewis]

Logged In: YES
user_id=21627

Thanks for the bugreport. This is now fixed in

copy.py 1.42
test_copy.py 1.11
NEWS 1.782
copy.py 1.22.10.6
NEWS 1.337.2.4.2.88