Python List Exercise with Solutions

Python list is the most widely used data structure, and a good understanding of list operations is necessary. This Python list exercise aims to help developers learn and practice list operations to improve their knowledge of the Python list. All questions are tested on Python 3.

This Python list exercise includes the following: –

The exercise contains 10 questions and solutions provided for each question. In this Python List assignment, you need to solve and practice different list programs, questions, problems, and challenges.

It covers questions on the following list topics:

• Python List operations and manipulations
• Python List functions
• Python list slicing
• Python list comprehension

When you complete each question, you get more familiar with the Python list. Let us know if you have any alternative solutions. It will help other developers.

Use Online Code Editor to solve exercise questions.

Read: Complete Guide on Python List

Exercise 1: Reverse a given list in Python

aLsit = [100, 200, 300, 400, 500]

Expected output:

[500, 400, 300, 200, 100]

aList = [100, 200, 300, 400, 500]
aList = aList[::-1]
print(aList)

Exercise 2: Concatenate two lists index-wise

Given:

list1 = ["M", "na", "i", "Ke"]
list2 = ["y", "me", "s", "lly"]

Expected output:

['My', 'name', 'is', 'Kelly']

list1 = ["M", "na", "i", "Ke"] 
list2 = ["y", "me", "s", "lly"]
list3 = [i + j for i, j in zip(list1, list2)]
print(list3)

Exercise 3: Given a Python list of numbers. Turn every item of a list into its square

Given:

aList = [1, 2, 3, 4, 5, 6, 7]

Expected output:

[1, 4, 9, 16, 25, 36, 49]

aList = [1, 2, 3, 4, 5, 6, 7]
aList =  [x * x for x in aList]
print(aList)

Exercise 4: Concatenate two lists in the following order

list1 = ["Hello ", "take "]
list2 = ["Dear", "Sir"]

Expected output:

['Hello Dear', 'Hello Sir', 'take Dear', 'take Sir']

list1 = ["Hello ", "take "]
list2 = ["Dear", "Sir"]

resList = [x+y for x in list1 for y in list2]
print(resList)

Exercise 5: Given a two Python list. Iterate both lists simultaneously such that list1 should display item in original order and list2 in reverse order

Given

list1 = [10, 20, 30, 40]
list2 = [100, 200, 300, 400]

Expected output:

10 400
20 300
30 200
40 100

list1 = [10, 20, 30, 40]
list2 = [100, 200, 300, 400]

for x, y in zip(list1, list2[::-1]):
    print(x, y)

Exercise 6: Remove empty strings from the list of strings

list1 = ["Mike", "", "Emma", "Kelly", "", "Brad"]

Expected output:

["Mike", "Emma", "Kelly", "Brad"]

list1 = ["Mike", "", "Emma", "Kelly", "", "Brad"]
resList = list(filter(None, list1))
print(resList)

Exercise 7: Add item 7000 after 6000 in the following Python List

Given:

list1 = [10, 20, [300, 400, [5000, 6000], 500], 30, 40]

Expected output:

[10, 20, [300, 400, [5000, 6000, 7000], 500], 30, 40]

list1 = [10, 20, [300, 400, [5000, 6000], 500], 30, 40]
list1[2][2].append(7000)
print(list1)

Exercise 8: Given a nested list extend it by adding the sub list ["h", "i", "j"] in such a way that it will look like the following list

Given List:

list1 = ["a", "b", ["c", ["d", "e", ["f", "g"], "k"], "l"], "m", "n"]

Sub List to be added = ["h", "i", "j"]

Expected output:

['a', 'b', ['c', ['d', 'e', ['f', 'g', 'h', 'i', 'j'], 'k'], 'l'], 'm', 'n']

list1 = ["a", "b", ["c", ["d", "e", ["f", "g"], "k"], "l"], "m", "n"]
subList = ["h", "i", "j"]

list1[2][1][2].extend(subList)
print(list1)

Exercise 9: Given a Python list, find value 20 in the list, and if it is present, replace it with 200. Only update the first occurrence of a value

Given

list1 = [5, 10, 15, 20, 25, 50, 20]

Expected output:

list1 = [5, 10, 15, 200, 25, 50, 20]

list1 = [5, 10, 15, 20, 25, 50, 20]

index = list1.index(20)
list1[index] = 200
print(list1)

Exercise 10: Given a Python list, remove all occurrence of 20 from the list

list1 = [5, 20, 15, 20, 25, 50, 20]

Expected output:

[5, 15, 25, 50]

list1 = [5, 20, 15, 20, 25, 50, 20]

def removeValue(sampleList, val):
   return [value for value in sampleList if value != val]
resList = removeValue(list1, 20)
print(resList)