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70 lines
2.0 KiB
70 lines
2.0 KiB
#!/usr/bin/env python3 |
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# MIT License |
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# |
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# Copyright (c) 2022 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com> |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a copy |
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# of this software and associated documentation files (the "Software"), to deal |
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# in the Software without restriction, including without limitation the rights |
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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# copies of the Software, and to permit persons to whom the Software is |
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# furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included in all |
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# copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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# SOFTWARE. |
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class A_Meta(type): |
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def __new__(mcs, name, bases, d): |
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print(f"{mcs=}") |
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print(f"{name=}") |
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print(f"{bases=}") |
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print(f"{d=}") |
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return type.__new__(mcs, name, bases, d) |
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class A(metaclass=A_Meta): |
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def __init__(self, *args, **kwargs): |
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pass |
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def test(self): |
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pass |
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print(f"{A=}") |
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a = A(1,2,3,4) |
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print(f"A ---> {a=}\n") |
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class B(A_Meta): |
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def __init__(self, *args, **kwargs): |
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pass |
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def test(self): |
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pass |
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b = B("NB",(),{}) |
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print(f"B ---> {b=}\n") |
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class C(): |
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def __init__(self) -> None: |
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print(f"C {type(self)=}") |
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class D(): |
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def __init__(self) -> None: |
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print(f"D {type(self)=}") |
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class E(C,D): |
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def __init__(self) -> None: |
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print(f"{super()=}") |
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super().__init__() |
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def pippo(self): |
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print(f"{super()=}") |
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e = E() |
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e.pippo() |
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print(f"E,D ---> {issubclass(E,D)=} {issubclass(E,C)=}") |