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A convenient way to create parametrized decorators.

Project description

Paramdec is a convenient way to create parametrized decorators.


Create your parametrized decorator:

>>> from paramdec import paramdec
>>> @paramdec
... def my_dec(func, foo=42, bar=None):
...     def wrapper(*func_args, **func_kwargs):
...         # Process foo and bar
...         return func(*func_args, **func_kwargs)
...     return wrapper

Use it with parameters:

>>> @my_dec(bar="bar")
>>> def func(): pass

Or without parameters:

>>> @my_dec()
>>> def func(): pass

Or even without parentheses:

>>> @my_dec
>>> def func(): pass

Also, consider using functools.wraps for your decorators.


  • No positional args supported.

The rationale behind this is the fact that I have not found any pythonic way to make a decorator differentiate between a function to be decorated and a callback. So if you pass a single callable positional argument to a parametrized decorator, it will mistakenly decide that it was called not as a factory but as a casual decorator.

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