Code Challenges

75 - Write a program that takes a list of numbers and returns the second largest number.

Python

Numbers

For Loops

158 - Write a program that models a real-world object as a class and implements inheritance, encapsulation, and polymorphism concepts. For example, you can create a class for a car, which has properties such as make, model, and year, and then inherit from that class to create a class for a sports car, which adds a property such as top speed.

Python

Object Oriented Programming

140 - Create a class "Animal" with properties for species, sound, and weight. Create methods for making the animal make its sound and for printing its information.

Python

Object Oriented Programming

72 - Write a program that takes a list of strings and prints the number of characters in each string.

Python

Strings

For Loops

132 - Create a class "Car" with properties for make, model, year, and speed. Create methods for accelerating and decelerating the car, and a method to print the current speed.

Python

Object Oriented Programming

126 - Create a function that takes in a string and a list of tuples, where each tuple contains a name and a list of hobbies, and returns a new list that contains only the names of the people in the list who have a certain hobby.

Python

Lists

Functions

9 - Write a program that prompts the user for two strings, and then checks if the second string is a substring of the first.

Python

Data Types

Strings

168 - Create a program that generates a list of prime numbers and saves the list to a module. Import the module into another program and display the prime numbers.

Python

Modules and Packages

35 - Create a dictionary of 5 students and their respective grades in 3 subjects, then calculate and print their average grade.

Python

Data Types

Dictionaries

173 - Write a program that generates a list of random numbers, saves the list to a module, and then imports the module into another program to display the minimum, maximum, and average of the numbers.

Python

Modules and Packages

33 - Create a dictionary with keys as the alphabet and values as the number of times the alphabet appears in a user-specified string.

Python

Data Types

Dictionaries

225 - Write a function to test if a given number is a happy number and write test cases for it.

Python

Testing

188 - What is wrong with the code below?

Python

Debugging

164 - Create a program that calculates the area of different shapes (circle, square, triangle) and save the functions in a module. Import the module into another program and allow the user to choose which shape they want the area calculated for.

Python

Modules and Packages

211 - Write a function to test if a list is sorted in ascending order and write test cases for it.

Python

Testing

117 - Write a function that takes in a list of numbers and returns the median of all the unique numbers in the list.

Python

Sets

Functions

177 - Create a program that generates a list of random names and saves the list to a module. Import the module into another program and display the names in alphabetical order.

Python

Modules and Packages

7 - Write a program that prompts the user for a string, and then splits the string into a list of words.

Python

Data Types

Strings

28 - Create a program that prompts the user for a string and stores each character in a tuple. Then, print the number of vowels and consonants in the string.

Python

Data Types

Tuples

113 - Create a function that takes in a list of numbers and returns the product of all elements

Python

Numbers

Functions

27 - Write a program that takes in two tuples and returns a tuple with the unique values from both tuples.

Python

Data Types

Tuples

237 - Test a class that represents a shopping cart: Write a ShoppingCart class that has attributes for the items in the cart and the total cost. Then, write test cases to ensure that the class works correctly, including testing the initialization of the object, adding and removing items from the cart, and checking that the total cost is updated correctly.

Python

Testing

20 - Write a program that prompts the user for a list of names, and then prints out the names in the correct order, but with the names written in reverse.

Python

Data Types

Lists

73 - Write a program that calculates the average length of all the strings in a list.

Python

Strings

For Loops

163 - Create a program that generates random numbers and stores them in a list. Save this list to a module, then import the module into another program and display the random numbers.

Python

Modules and Packages

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