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Python Programming - Encapsulation - Discussion

Discussion Forum : Encapsulation - General Questions (Q.No. 102)
Encapsulation
102.
In Python, what is the benefit of using a private variable with a double underscore prefix, such as __song_count? 
class MusicLibrary:
    __song_count = 0

    def update_count(self, count):
        MusicLibrary.__song_count += count
It improves code maintainability by hiding implementation details
It allows unrestricted access to __song_count
It exposes all internal details of __song_count
It creates a global variable
Answer: Option
Explanation:
Encapsulation with a double underscore prefix improves code maintainability by hiding the implementation details of the class attribute __song_count.
Discussion:
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