# test calling a function with *tuple and **dict def f(a, b, c, d): print(a, b, c, d) f(*(1, 2), **{'c':3, 'd':4}) f(*(1, 2), **{['c', 'd'][i]:(3 + i) for i in range(2)}) try: eval("f(**{'a': 1}, *(2, 3, 4))") except SyntaxError: print("SyntaxError") # test calling a method with *tuple and **dict class A: def f(self, a, b, c, d): print(a, b, c, d) a = A() a.f(*(1, 2), **{'c':3, 'd':4}) a.f(*(1, 2), **{['c', 'd'][i]:(3 + i) for i in range(2)}) try: eval("a.f(**{'a': 1}, *(2, 3, 4))") except SyntaxError: print("SyntaxError") # coverage test for arg allocation corner case def f2(*args, **kwargs): print(len(args), len(kwargs)) f2(*iter(range(4)), **{'a': 1}) # case where *args is not a tuple/list and takes up most of the memory allocated for **kwargs f2(*iter(range(100)), **{str(i): i for i in range(100)}) # regression test - iterable with unknown len() was exactly using preallocated # memory causing args 4 and 5 to overflow the allocated arg array print(1, *iter((1, 2, 3)), *iter((1, 2, 3)), 4, 5, sep=",")