How to make a simple calculator in Python

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Python is a really popular programming language. I’ve been using it for around 2 years. Based in my experience, Python is really fast and easy for beginners. As matter a fact, Python is multi-paradigm, which makes it easier for the beginners to start with. Today, I am going to be explaining step by step, line by line, what Python is, how to install it, how to use Python, and even how to make a simple calculator in it.

WHAT IS PYTHON THE PROGRAMMING LANGUAGE

Python is an open source programming language made to both look good and be easy to read. A programmer named Guido van Rossum made it in 1991. Python is named after the television show Monty Python’s Flying Circus. Many examples and tutorials include jokes from the show.

Python is an interpreted language. Interpreted languages do not need to be compiled to run. A program called an interpreter will run Python code on any kind of computer it can run on itself. This means if the programmer needs to change the code they can quickly see the results.

Python is a good programming language for beginners. It is a high-level language, which means a programmer can focus on what to do instead of how to do it. Writing programs in Python takes less time than in another language.

HOW TO INSTALL PYTHON

First, you need to go to www.python.org. Then, you’re going to go to Downloads and install the latest version of Python. When the installation is done, you’re going to open the file that just downloaded. Then, you must press Install for all users and you need to click next in every prompt, without changing the parameters. After Python is downloaded, go to Start Menu and search “IDLE”, and there will appear an app called IDLE (Python 3.10 64-bit). Mine is different, but yours will depend on the version and the operating system.

HOW TO USE PYTHON

You can use Python for making games and apps. Python is really easy and you can learn it in a week!

HOW TO MAKE A SIMPLE CALCULATOR IN PYTHON

You need to declare the variable first. A, B and ANS are variables.

a = int(input(‘Enter the first number:’))  — asks the user to put a number
b = int(input(‘Enter the second number:’)) — — asks the user to put the second number
ans = input(‘add/sub/mul/div:’) — asks the user for the operation

if ans == ‘+’:  — if the ans value(which is the answer) is +, then
print(a + b) — it will add the two numbers
elif ans == ‘-‘: — if the ans value(which is the answer) is -, then
print(a – b)  — it will subtract the two numbers
elif ans == ‘*’: — if the ans value(which is the answer) is *, then
print(a * b) — it will multiply the two numbers
elif ans == ‘/’: — if the ans value(which is the answer) is /, then
print(a / b) — it will divide the two numbers
else: — if the answer won’t match, then
print(‘error.’) — it will print “error” and it won’t do any calculations

Please comment below with any questions about using Python. Were you able to install and try out the calculator program?

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