如何在Python中解包参数？

Question

有没有可能像javascript那样在python中解压参数？你知道吗

def foo([ arg ]):
    pass

foo([ 42 ])

Answer 1

参数解包是removed in Python 3，因为它很混乱。在python2中，您可以

def foo(arg, (arg2, arg3)):
    pass

foo( 32, [ 44, 55 ] )

python3中的等效代码是

def foo(arg, arg2, arg3):
    pass

foo( 32, *[ 44, 55 ] )

或者

def foo(arg, args):
    arg2, arg3 = args

foo( 32, [ 44, 55 ] )