运行此类的正确方法是什么？

Question

I have this class:

class MyClass:
    def __init__(self, my_list):
        for item in my_list:
            print(item)

How can I set a variable to run MyClass() since it requires my_list ?

I have tried MyClass = MyClass() but I get this error:

TypeError: __init__() takes exactly 2 arguments (1 given)

What is the correct way?

Answer 1

You need to pass in an iterable as the first argument; a list for example:

instance = MyClass(['a', 'b', 'c'])

but anything that can be looped over will do; so a tuple, a string, a dictionary, a file object will all do.

Don't assign the result back to MyClass ; then you'd rebind that name from the original class to the newly-created instance of MyClass .

Answer 2

Ummm... just submit an iterable as the my_list argument?

Demo:

>>> example = MyClass([1, 2, 3])
1
2
3