class a:
def __init__(self):
self._b()#why here use _b,not b,What's the difference
self._c='cccc'#why here use _c,not c,What's the difference
def _b():
print 'bbbb'
a.py
class a:
def __init__(self):
self._b()#why here use _b,not b,What's the difference
self._c='cccc'#why here use _c,not c,What's the difference
def _b(self):
print 'bbbb'
b.py
from a import *
b=a()
b._b()
print b._c
它打印 bbbb bbbb bbbb bbbb cccc
为什么能打印出这些，不就是_b和_c私有(private)变量吗。
请您参考如下方法:
在变量名或函数名前加下划线是 Python 中的一种约定，表示该变量是私有(private)的。来自 the docs :
Private” instance variables that cannot be accessed except from inside an object, don’t exist in Python. However, there is a convention that is followed by most Python code: a name prefixed with an underscore (e.g. _spam) should be treated as a non-public part of the API (whether it is a function, a method or a data member). It should be considered an implementation detail and subject to change without notice.
