super().__new__(...) doesn't work #778

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1. Lynskylate commented on Aug 15, 2019

   

   Lynskylate

   on Aug 15, 2019

   Contributor

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   I met same trouble as you when I try to import enum.py. I simplify the code.

   class EnumMeta(type):
       def __new__(metacls, cls, bases, classdict):
           enum_class = super().__new__(metacls, cls, bases, classdict)
           return enum_class
   
   class Test(metaclass=EnumMeta):
       def __init__(self):
           pass
   """
   >>> t = Test() 
   # RustPython Output:
   Traceback (most recent call last):
     File "/tmp/reproduce.py", line 17, in <module>
       class Test(metaclass=EnumMeta):
     File "/tmp/reproduce.py", line 14, in __new__
       enum_class = super().__new__(metacls, cls, bases, classdict)
   TypeError: type() takes 1 or 3 arguments,
   """
2. windelbouwman commented on Aug 18, 2019

   

   windelbouwman

   on Aug 18, 2019

   Last edited by windelbouwman

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   I stumbled upon the implicit __class__ variable. This page might be related:

   • https://www.python.org/dev/peps/pep-3135/
   • https://docs.python.org/3/reference/datamodel.html?highlight=__class__#creating-the-class-object
3. youknowone commented on Jul 17, 2020

   

   youknowone

   on Jul 17, 2020

   Member

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   Both of the reported code works now.
4. youknowone

   closed this as completedon Jul 17, 2020