>>> 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，請(qǐng)輕拍！
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TA貢獻(xiàn)1869條經(jīng)驗(yàn) 獲得超4個(gè)贊
方法a要通過一實(shí)例來調(diào)用，如：
class A:
def a(self):
print("I'm a")
obj = A()
obj.a()
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