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A dictionary is a collection which is ordered, changeable and do not allow duplicates.

difference () Returns a set containing the difference between two or more sets. Dictionaries are used to store data values in key:value pairs. What is a Set The sets are an unordered collection of. The lists, on the other hand, are mutable. Python Dictionaries Access Items Change Items Add Items Remove Items Loop Dictionaries Copy Dictionaries Nested Dictionaries Dictionary Methods Dictionary Exercise Python If.Else Python While Loops Python For Loops Python Functions Python Lambda Python Arrays Python Classes/Objects Python Inheritance Python Iterators Python Polymorphism Python Scope Python Modules Python Dates Python Math Python JSON Python RegEx Python PIP Python Try. The function dict creates a new dictionary with no items within it. clear () Removes all the elements from the set. The difference is that a tuple, unlike a list, is immutable.