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Save constructor arguments on self without writing self.x = x etc...
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| from inspect import signature | |
| def auto_args(f): | |
| sig = signature(f) # Get a signature object for the target: | |
| def replacement(self, *args, **kwargs): | |
| # Parse the provided arguments using the target's signature: | |
| bound_args = sig.bind(self, *args, **kwargs) | |
| # add defaults otherwise defaults are unbonund, thus not in the list | |
| bound_args.apply_defaults(); | |
| # Save away the arguments on `self`: | |
| for k, v in bound_args.arguments.items(): | |
| if k != 'self': | |
| setattr(self, k, v) | |
| # Call the actual constructor for anything else: | |
| f(self, *args, **kwargs) | |
| return replacement | |
| class MyClass: | |
| @auto_args | |
| def __init__(self, a, b, c=None): | |
| pass | |
| m = MyClass('A', 'B', 'C') | |
| print(m.__dict__) | |
| # {'a': 'A', 'b': 'B', 'c': 'C'} | |
| m = MyClass('A', 'B') | |
| print(m.__dict__) | |
| {'b': 'B', 'a': 'A', 'c': None} |
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