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def f1(**kwargs):
print(kwargs)
f1()
f1(a=1)
def f2(a, **kwargs):
print(a, kwargs)
f2(1)
f2(1, b=2)
def f3(a, *vargs, **kwargs):
print(a, vargs, kwargs)
f3(1)
f3(1, 2)
f3(1, b=2)
f3(1, 2, b=3)
def f4(*vargs, **kwargs):
print(vargs, kwargs)
f4(*(1, 2))
f4(kw_arg=3)
f4(*(1, 2), kw_arg=3)
# test evaluation order of arguments
def f5(*vargs, **kwargs):
print(vargs, kwargs)
def print_ret(x):
print(x)
return x
f5(*print_ret(["a", "b"]), kw_arg=print_ret(None))
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