如何根据参数的可变数目创建不同的类类型

我有一些python代码需要模块化:

list1 = []
list2 = []
list3 = []
.
.
.
for s in list3:

    if object in list1:
        e = Class1(arg1, arg2, s)
    else:
        e = Class2(arg3, arg4, arg5, s)

    x(e)
    y(e)
    z(e)

def my_method(self, list, e):

    for object in list:
        x(e)
        y(e)
        z(e)

然后简单地调用my_method()两次,一次为list1,一次为list2:

# How/where do I "create" e1 and e2, given I need s, which is inside my_method()?
my_method(list1, e1)
my_method(list2, e2)

s 只在里面知道 my_method()