Square of every value

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Python Practice › Dictionary Programs › Program 2

Square of every value

EasyDictionary Programs · 2 of 94

Write a Python program to print the square of every value in a dictionary.

Input

{"a": 5, "b": 3, "c": 6, "d": 8}

Output

a : 25
b : 9
c : 36
d : 64

Approach

Loop over items().

Solution

Python

d = {"a": 5, "b": 3, "c": 6, "d": 8}for key, value in d.items():    print(key, ":", value ** 2)

Output

a : 25
b : 9
c : 36
d : 64

Learn the concept

New to this topic? Read the lesson, then come back.

Dictionaries lesson →

More dictionary programs

#3EasyMove items to another dictionary #4EasyConcatenate two dictionaries #5EasyOdd and even keys #6EasyDictionary from two lists

← All 94 Dictionary Programs

Add elements to a dictionary

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Python Practice › Dictionary Programs › Program 1

Add elements to a dictionary

EasyDictionary Programs · 1 of 94

Write a Python program to add elements to a dictionary.

Input

{"name": "Asha"}

Output

{'name': 'Asha', 'city': 'Pune', 'age': 29, 'role': 'tester'}

Approach

Assign to a new key, or use update() for several keys.

Solution

Python

person = {"name": "Asha"}person["city"] = "Pune"person.update({"age": 29, "role": "tester"})print(person)

Output

{'name': 'Asha', 'city': 'Pune', 'age': 29, 'role': 'tester'}

Line by line

Line 2

Assigning to a key that does not exist adds it.

Line 3

update adds (or replaces) several keys at once.

Learn the concept

New to this topic? Read the lesson, then come back.

Dictionaries lesson →

More dictionary programs

#2EasySquare of every value #3EasyMove items to another dictionary #4EasyConcatenate two dictionaries #5EasyOdd and even keys

← All 94 Dictionary Programs

Python Dictionary Programs with Solutions

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Python Practice › Dictionary Programs

Python Dictionary Programs with Solutions

94 programs91 easy3 medium0 hard

94 dictionary programs: adding, removing and renaming keys, merging, sorting by key or value, counting with dictionaries, grouping, inverting, and working with nested dictionaries and lists of dictionaries. Every solution is explained with its real output.

Before you start

Read the Dictionaries lesson first if the topic is new to you.

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