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What are the characteristics of Python Dictionaries ?

Answer»

The 3 main characteristics of a dictionary are :

1. Dictionaries are Unordered : The dictionary elements (key-value pairs) are not in ordered form.

2. Dictionary Keys are Case Sensitive : The same key name but with different case are treated as different keys in Python dictionaries. 

3. No duplicate key is allowed : When duplicate keys encountered during assignment, the last assignment wins. 

4. Keys must be immutable : We can use strings, numbers or tuples as dictionary keys but something like [‘key’] is not allowed.



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