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KwickClips Python · 44 sec · free

Is a list mutable?

Short answer. Yes, it keeps the same id after append.

What does id() show?

An object's identity.

Remember

int, float, str: immutable
list, dict, set: mutable
id() shows identity

A number or a list: Which stays the same object? Id gives identity. We change both. Runs got a new id, so ints are immutable. The list kept its id. Int, float, str: immutable. List, dict, set: mutable. Id shows identity.

This clip is from the full lesson: Variables, Assignment and Data Types in Python — 8 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: CBSE Class 10 Computer Applications (165), CBSE Class 9 Information Technology (402), CBSE Class 9 Artificial Intelligence (417), CBSE Class 9 Artificial Intelligence (417)

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