783b1a868f
This is a partial implementation of PEP 448 to allow unpacking multiple star args in a function or method call. This is implemented by changing the emitted bytecodes so that both positional args and star args are stored as positional args. A bitmap is added to indicate if an argument at a given position is a positional argument or a star arg. In the generated code, this new bitmap takes the place of the old star arg. It is stored as a small int, so this means only the first N arguments can be star args where N is the number of bits in a small int. The runtime is modified to interpret this new bytecode format while still trying to perform as few memory reallocations as possible. Signed-off-by: David Lechner <david@pybricks.com>
28 lines
568 B
Python
28 lines
568 B
Python
# test calling a function with *tuple and **dict
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def f(a, b, c, d):
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print(a, b, c, d)
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f(*(1, 2), **{'c':3, 'd':4})
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f(*(1, 2), **{['c', 'd'][i]:(3 + i) for i in range(2)})
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try:
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eval("f(**{'a': 1}, *(2, 3, 4))")
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except SyntaxError:
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print("SyntaxError")
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# test calling a method with *tuple and **dict
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class A:
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def f(self, a, b, c, d):
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print(a, b, c, d)
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a = A()
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a.f(*(1, 2), **{'c':3, 'd':4})
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a.f(*(1, 2), **{['c', 'd'][i]:(3 + i) for i in range(2)})
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try:
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eval("a.f(**{'a': 1}, *(2, 3, 4))")
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except SyntaxError:
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print("SyntaxError")
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