Does this function take multiple arguments? >>> def f(x, y): pass >>> takes_multiple_arguments(f) True >>> def f(x): pass >>> takes_multiple_arguments(f) False >>> def f(x, y=None): pass >>> takes_multiple_arguments(f) False >>> def f(*args): pass >>>
(func, varargs=True)
| 650 | |
| 651 | |
| 652 | def takes_multiple_arguments(func, varargs=True): |
| 653 | """Does this function take multiple arguments? |
| 654 | |
| 655 | >>> def f(x, y): pass |
| 656 | >>> takes_multiple_arguments(f) |
| 657 | True |
| 658 | |
| 659 | >>> def f(x): pass |
| 660 | >>> takes_multiple_arguments(f) |
| 661 | False |
| 662 | |
| 663 | >>> def f(x, y=None): pass |
| 664 | >>> takes_multiple_arguments(f) |
| 665 | False |
| 666 | |
| 667 | >>> def f(*args): pass |
| 668 | >>> takes_multiple_arguments(f) |
| 669 | True |
| 670 | |
| 671 | >>> class Thing: |
| 672 | ... def __init__(self, a): pass |
| 673 | >>> takes_multiple_arguments(Thing) |
| 674 | False |
| 675 | |
| 676 | """ |
| 677 | if func in ONE_ARITY_BUILTINS: |
| 678 | return False |
| 679 | elif func in MULTI_ARITY_BUILTINS: |
| 680 | return True |
| 681 | |
| 682 | try: |
| 683 | spec = getargspec(func) |
| 684 | except Exception: |
| 685 | return False |
| 686 | |
| 687 | try: |
| 688 | is_constructor = spec.args[0] == "self" and isinstance(func, type) |
| 689 | except Exception: |
| 690 | is_constructor = False |
| 691 | |
| 692 | if varargs and spec.varargs: |
| 693 | return True |
| 694 | |
| 695 | ndefaults = 0 if spec.defaults is None else len(spec.defaults) |
| 696 | return len(spec.args) - ndefaults - is_constructor > 1 |
| 697 | |
| 698 | |
| 699 | def get_named_args(func) -> list[str]: |