python 方法中的变量与self.变量的区别

参考链接：Python 方法中变量加self和不加的区别

 1 >>> class AAA(object):
 2 ...     def go(self):
 3 ...         self.one = ‘hello‘
 4 ...
 5 >>> class BBB(object):
 6 ...     def go(self):
 7 ...         one = ‘hello‘
 8 ...
 9 >>> a1 = AAA()
10 >>> a1.go()
11 >>> a1.one
12 ‘hello‘
13 >>> a2 = AAA()
14 >>> a2.one
15 Traceback (most recent call last):
16   File "<stdin>", line 1, in <module>
17 AttributeError: ‘AAA‘ object has no attribute ‘one‘
18 >>> a2.go()
19 >>> a2.one
20 ‘hello‘
21 >>> b1 = BBB()
22 >>> b1.go()
23 >>> b1.one
24 Traceback (most recent call last):
25   File "<stdin>", line 1, in <module>
26 AttributeError: ‘BBB‘ object has no attribute ‘one‘
27 >>> BBB.one
28 Traceback (most recent call last):
29   File "<stdin>", line 1, in <module>
30 AttributeError: type object ‘BBB‘ has no attribute ‘one‘
31 >>> class BBB(object):
32 ...     def go(self):
33 ...         one = ‘hello‘
34 ...         print one
35 ...         self.another = one
36 ...
37 >>> b2 = BBB()
38 >>> b2.go()
39 hello
40 >>> b2.another
41 ‘hello‘
42 >>> b2.one
43 Traceback (most recent call last):
44   File "<stdin>", line 1, in <module>
45 AttributeError: ‘BBB‘ object has no attribute ‘one‘