Op 24/06/2022 om 0:32 schreef Dennis Lee Bieber:
On Thu, 23 Jun 2022 18:57:31 +0200, "Dieter Maurer"<die...@handshake.de>
declaimed the following:
>??? ???? wrote at 2022-6-23 15:31 +0300:
>>how to solve this (argparse)
>> MAXREPEAT = _NamedIntConstant(32,name=str(32))
>>TypeError: 'name' is an invalid keyword argument for int()
>
>This does not look like an `argparse` problem:
>the traceback comes from `oracle/RTR.py`.
And the listed code looks quite suspicious to me...
>> class _NamedIntConstant(int):
>> def __init__(cls, value):
>> self = super(_NamedIntConstant, cls).__init__(cls, value)
>> self.name = name
>> return self
There does not appear to be any provision for keyword arguments at all.
The only use of "name" is to an undefined object.
The code seems to be a copy of Lib/re/_constants.py (or
Lib/sre_constants.py before commit
1be3260a90f16aae334d993aecf7b70426f98013), but in _constants.py that
class uses __new__ instead of __init__:
class _NamedIntConstant(int):
def __new__(cls, value, name):
self = super(_NamedIntConstant, cls).__new__(cls, value)
self.name = name
return self
def __repr__(self):
return self.name
__reduce__ = None
(unless still older versions did use __init__)
It's used there as a kind of enum. I guess that code was originally
written before Python had enum.Enum. _makecodes() uses it so create
named int objects from its arguments, with automatically generated
consecutive int values, places them in the global namespace (feels like
a code smell to me) and also returns them.
def _makecodes(*names):
items = [_NamedIntConstant(i, name) for i, name in
enumerate(names)]
globals().update({item.name: item for item in items})
return items
# operators
OPCODES = _makecodes(
# failure=0 success=1 (just because it looks better that way :-)
'FAILURE', 'SUCCESS',
'ANY', 'ANY_ALL',
'ASSERT', 'ASSERT_NOT',
'AT',
# ...
)
נתי שטרן, are you trying to use that semi-enum functionality? Most
likely you're better of using enum.Enum instead.
--
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of the time, but you cannot fool all of the people all of the time."
-- Abraham Lincoln
"You can fool too many of the people too much of the time."
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