inspect_signature_function.py

#!/usr/bin/env python3
"""Print information about the arguments to a method.
"""

#end_pymotw_header
import inspect
import example

sig = inspect.signature(example.module_level_function)
print('module_level_function{}'.format(sig))

print('\nParameter details:')
for name, param in sig.parameters.items():
    if param.kind == inspect.Parameter.POSITIONAL_ONLY:
        print('  {} (positional-only)'.format(name))
    elif param.kind == inspect.Parameter.POSITIONAL_OR_KEYWORD:
        if param.default != inspect.Parameter.empty:
            print('  {}={!r}'.format(name, param.default))
        else:
            print('  {}'.format(name))
    elif param.kind == inspect.Parameter.VAR_POSITIONAL:
        print('  *{}'.format(name))
    elif param.kind == inspect.Parameter.KEYWORD_ONLY:
        if param.default != inspect.Parameter.empty:
            print('  {}={!r} (keyword-only)'.format(
                name, param.default))
        else:
            print('  {} (keyword-only)'.format(name))
    elif param.kind == inspect.Parameter.VAR_KEYWORD:
        print('  **{}'.format(name))