Dictionary: • In Python, a dictionary is defined as an unordered collection of data. • Each element of the dictionary is a key-value pair. • For each key, there is a value mapped to it. • Key is unique throughout the dictionary but the value may not be unique. • Each value in the dictionary can be accessed using the corresponding key value. • The keys in the dictionary cannot be modified but the values can be modified.

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Chapter 9.1, Problem 12CP

Program Plan Intro

Dictionary:

• In Python, a dictionary is defined as an unordered collection of data.

• Each element of the dictionary is a key-value pair.

• For each key, there is a value mapped to it.

• Key is unique throughout the dictionary but the value may not be unique.

• Each value in the dictionary can be accessed using the corresponding key value.

• The keys in the dictionary cannot be modified but the values can be modified.

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