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In this tutorial, we will make a simple maths game on the console with the PyInputPlus module. The main features of this simple game are adding points (like a score), multiple equation types (such as addition, subtraction, multiplication, and division), and the ability to stop the game.
To get started, since PyInputPlus is not a built-in module, we have to install it:
$ pip install PyInputPlus
Importing PyInputPlus and random:
# Imports import pyinputplus as pyip from random import choice
Related: How to Make a Hangman Game in Python.
We continue by setting up some variables to use later.
questionTypes list holds the operators which can be used in the equations; keep in mind that they have to be valid Python operators. You could add the modulo
(%) or any other valid Python operator to the list to enable these operators in the game. These will be randomly chosen with the
Next, we define a list called
numberRange which holds all numbers that can appear in the equations. We can do this in one line.
Last but not least, we define a points variable, which starts with 0.
# Variables questionTypes = ['+', '-', '*', '/', '**'] numbersRange = [num for num in range(1, 20)] points = 0
To ensure that the user knows what he has to do, we print some hints about the game.
Later we will round Solutions because equations like
7 / 4 are impossible to write out.
We will also enable the user to stop the game after every question. That's why we mention it here.
# Hints print('Round down to one Number after the Comma.') print('When asked to press enter to continue, type stop to stop.\n')
We now enter the game loop, where we start by deciding on a question type. This is done with the
random.choice() method from the random module. This will return one of the items from the
Then we build the equation where we also use the
random.choice() to choose random items from the
numbersRange list and insert them in this string.
After that, we used Python's great
eval() function. It takes a string and evaluates it, and returns the solution. We save this to the solution variable; we later test this against what the user has written.
# Game Loop while True: # Deciding and generating question currenType = choice(questionTypes) promptEquation = str(choice(numbersRange)) + ' ' + currenType + ' ' + str(choice(numbersRange)) solution = round(eval(promptEquation), 1)
Next, we use the
inputNum() method from the PyInputPlus Module. This function will test if the input was a number, and if not, it will ask again. We fill out its prompt parameter with our prompt string; keep in mind to add
' = ' so it makes sense for the user. We could not have done this before the
eval() function because it would work that way.
# Getting answer from User answer = pyip.inputNum(prompt=promptEquation + ' = ')
After we receive the user input, we test it against the solution returned by the
eval() function. If they match, we raise the points by one and print out a nice comment and the new point number.
If it's wrong, we lower the points by one and print out the right solution.
# Feedback and Points if answer == solution: points += 1 print('Correct!\nPoints: ',points) else: points -= 1 print('Wrong!\nSolution: '+str(solution)+'\nPoints: ',points)
Last but not least, we halt the game after every question. If the user presses enter, it continues. For that to work, we have to set
True but if the user types
stop, the game will stop.
# Stopping the Game if pyip.inputStr('Press "Enter" to continue', blank=True) == 'stop': break # Some Padding print('\n\n')
Let's run it:
$ python simple_math_game.py Round down to one Number after the Comma. When asked to press enter to continue, type stop to stop. 5 ** 4 = 625 Correct! Points: 1 Press "Enter" to continue 9 ** 18 = 190 Wrong! Solution: 150094635296999121 Points: 0 Press "Enter" to continue 7 - 17 = -10 Correct! Points: 1 Press "Enter" to continue stop
Awesome! Now you know how to make a simple console math game with PyInputPlus. You can get the complete code here.
Learn also: How to Generate Random Data in Python
Happy coding ♥
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