1 underline.py
2 __all__ = ['_underline_variable', '__underline_variable', '_underline_func',
3 '__underline_func', '_underline_class', '__underline_class']
4
5
6 _underline_variable = 100
7 __underline_variable = 200
8
9
10 def _underline_func():
11 pass
12
13 def __underline_func():
14 pass
15
16 class _underline_class():
17 pass
18
19 class __underline_class():
20 pass
21
22
23 class Base():
24 def _underline(self):
25 pass
26
27 def __underline(self): # 私有
28 pass
29
30
31 class Derived(Base):
32 pass
33
34 if __name__ == '__main__':
35 base = Base()
36 base._underline()
37 #base.__underline()
38 base._Base__underline()
39
40 derived = Derived()
41 derived._underline()
42 #derived._Derived__underline()
43 derived._Base__underline()
1 test.py
2 # 1 用import方式导入
3 import underline
4
5 print(underline._underline_variable)
6 print(underline.__underline_variable)
7 underline._underline_func()
8 underline.__underline_func()
9 test1 = underline._underline_class()
10 test2 = underline.__underline_class()
11
12 print('*' * 20)
13
14
15 # 2 没有定义__all__属性,用from ... import *方式导入
16 #from underline import *
17 #print(_underline_variable)
18 #print(__underline_variable)
19 #_underline_func()
20 #__underline_func()
21 #test1 = _underline_class()
22 #test2 = __underline_class()
23
24
25 # 3 定义__all__属性,用from ... import *方式导入
26 from underline import *
27 print(_underline_variable)
28 print(__underline_variable)
29 _underline_func()
30 __underline_func()
31 test1 = _underline_class()
32 test2 = __underline_class()
