如何在Python中解压缩参数？

Question

是否可以像javascript一样在python中解压缩参数？

def foo([ arg ]):
    pass

foo([ 42 ])

Answer 1

参数解压缩为removed in Python 3，因为它令人困惑。在Python 2中，您可以做到

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

foo( 32, [ 44, 55 ] )

Python 3中的等效代码要么是

def foo(arg, arg2, arg3):
    pass

foo( 32, *[ 44, 55 ] )

或

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

foo( 32, [ 44, 55 ] )