python 可变参数的2种用法

def add_end(L=[],x=[]):
    L.append('END')
    x.append("sss")
    print(L[1])
    print(x[0])
    return L,x
print(add_end([1, 2, 3]))

print("=================================================")

def func(a, b, c=0, *args, **kw):
    print('a =', a, 'b =', b, 'c =', c, 'args =', args, '

C:\Users\Administrator\AppData\Local\Programs\Python\Python35\python.exe D:/egstar/a调试/ancd.py
2
sss
([1, 2, 3, 'END'], ['sss'])
=================================================
a = 1 b = 2 c = 3 args = ('a', 'b') kw = {'y': 92, 'x': 99}
b
99

Process finished with exit code 0