Python 问题求解?

Question

>>> class A:
def a(self):
print("I'm a")

>>> A.a()

Traceback (most recent call last):
File "<pyshell#10>", line 1, in <module>
A.a()
TypeError: unbound method a() must be called with A instance as first argument (got nothing instead)
小弟新手，请轻拍！

Answer 1

方法a要通过一实例来调用，如：class A:def a(self):print("I'm a")obj = A()obj.a()