function_arg_inspector

Example Python program function_arg_inspector.py Python version 3.x or newer. To check the Python version use:

python --version

Modules

import collections
import functools
import inspect

Methods

def log_func_args(func):
def decorator(args, *kwargs):
def test(a, b, c, d, e=99, f=33):

Code

Python example

# python3.5
def log_func_args(func):
    import collections
    import functools
    import inspect

    @functools.wraps(func)
    def decorator(*args, **kwargs):
        parameters = inspect.signature(func).parameters
        param_args = collections.OrderedDict({
            k: v.default for k, v in parameters.items()
        })
        arg_iter = iter(args)
        for param in param_args.keys():
            try:
                param_args[param] = next(arg_iter)
            except StopIteration:
                break
        param_args.update(kwargs)

        print(
            '{}({})'.format(
                func.__name__,
                ', '.join('{}={}'.format(k, v) for k, v in param_args.items())
            )
        )
        return func(*args, **kwargs)
    return decorator


@log_func_args
def test(a, b, c, d, e=99, f=33):
    return a, b, c, d, e , f


In [1]: test(1, 2, 3, 4)
test(a=1, b=2, c=3, d=4, e=99, f=33)
Out[1]: (1, 2, 3, 4, 99, 33)

In [2]: test(1,2,3, 4, e=5, f=6)
test(a=1, b=2, c=3, d=4, e=5, f=6)
Out[2]: (1, 2, 3, 4, 5, 6)

In [3]: test(1, 2, 3, 4, f=6, e=5)
test(a=1, b=2, c=3, d=4, e=5, f=6)
Out[3]: (1, 2, 3, 4, 5, 6)

Useful Links

Articles: https://python-commandments.org/
Python shell: https://bsdnerds.org/learn-python/
Tutorial: https://pythonprogramminglanguage.com/