Repository navigation
tuple does not define __new__ #2091
Description
Reporting python/mypy#4991 here.
This code to make a subclass of tuple does not pass the test.
class A(tuple):
def __new__(cls, fields):
return super(A, cls).__new__(cls, tuple(fields))
With those settings:
python_version=3.5
warn_unused_ignores=True
warn_redundant_casts=True
strict_optional=True
scripts_are_modules=True
check_untyped_defs=True
Using mypy 0.590
And it results in
/tmp/test.py:3: error: Too many arguments for "__new__" of "object"
Activity
ltworf commentedon May 3, 2018
It can be called with
So I think the type should be:
ltworf commentedon May 3, 2018
Seems I did some mistake
./stdlib/3/builtins.pyi:585:56: Y011 Default values for typed arguments must be "..."
./stdlib/3/builtins.pyi:585:56: B008 Do not perform calls in argument defaults. The call is performed only once at function definition time. All calls to your function will reuse the result of that definition-time call. If this is intended, assign the function call to a module-level variable and use that variable as a default value.
The calls in default is fine, since tuple() is not mutable though.
Add __new__ to tuple stub (#2092)
Add __new__ to tuple stub (python#2092)
add __new__ to tuple in python2
add __new__ to tuple in python2
add __new__ to tuple in python2 (#2304)
Add __new__ to tuple stub (python#2092)
add __new__ to tuple in python2 (python#2304)