请教一个 getattr 的问题，感谢！

class A:
def __init__(self):
self.name = 'test'
def method(self):
print("method print")

Instance = A()
print(getattr(A, 'method', 'default')())

上面这段代码输出如下，请问要怎么修改才能使得 print 语句可以显示 method 函数的执行结果呢？谢谢

Traceback (most recent call last):
File "d:\Python3\t1.py", line 9, in
print(getattr(A, 'method', 'default')())
TypeError: method() missing 1 required positional argument: 'self'

method

getattr

default'

1 replies

zhusimaji

Jul 3, 2017

给楼主贴一段代码吧

#!/usr/bin/python

class test:
def method(self):
print('hello world')
a=test()
print(getattr(a,'method','default')())
print(getattr(test,'method','default')())

输出结果

hello world
None
Traceback (most recent call last):
File "/usercode/file3.py", line 8, in <module>
print(getattr(test,'method','default')())
TypeError: method() missing 1 required positional argument: 'self'

楼主你自己的代码需要传递实例