Python doesn’t have real private variables, so use the __ prefix (two underlines at the beginning make a variable) from PEP 8. Use instance _class-name__private-attribute try to access private variables outside the class in Python.
Note: There is no such thing as “Private variable or method ” in Python. Double underscore is just name mangling:
Example access a private variable outside the class in Python
Simple example code __amount is the private variable.
Outside the class, you can’t access the private variable, but inside the class, you can access the private variables.
class A:
__amount = 45
a = A()
print(a.__amount)
Output: AttributeError: ‘A’ object has no attribute ‘__amount’
Access through method
However, inside the class, we can access the private variables. Print the value inside hello() function.
class A:
__amount = 45
def hello(self):
print("Amount is ", A.__amount)
a = A()
a.hello()
Output:
How to prevent access to private variables outside the class in Python
Python example protected attributes.
class example:
def __init__(self):
self._variable1='protected variale'
self.__variable2='private variable'
self.variable3='public variable'Do comment if you have any questions or suggestions on this Python variable tutorial.
Note: IDE: PyCharm 2021.3.3 (Community Edition)
Windows 10
Python 3.10.1
All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.