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Writing and Running Python Programs

Writing and Running Python Programs

Introduction to Python Programming

Python is a popular, interpreted, high-level programming language with dynamic semantics. It is used for web development, data science, scripting, and much more. With its simple and easy-to-learn syntax, Python is a great choice for beginners and experienced programmers alike. In this guide, we'll go over the basics of writing and running Python programs.

Getting Started with Python

To get started with Python, you'll need a text editor or code editor. Popular editors include Atom, Visual Studio Code, and PyCharm. You'll also need to install Python on your computer. You can find instructions for downloading and installing Python on the official Python website.

Writing a Python Program

Once you have Python installed, you can start writing your first program. You can open a text editor and type the following code:

print('Hello, World!')

This code simply prints the phrase “Hello, World!” to the screen. To save your program, type a name for it and save it with the .py extension. For example, you can save your program as “hello.py”.

Running a Python Program

Once your program is saved, you can run it by opening your terminal or command prompt and typing “python” followed by the name of your program. For example, you can type the following command to run the “hello.py” program:

python hello.py

This will run your program and you should see the “Hello, World!” phrase printed to the screen.

Tips for Writing and Running Python Programs

  • Use proper indentation to make your code easier to read and understand.
  • Make sure you save your programs with the .py extension.
  • Always use the “python” command to run your programs.
  • Use the “print” statement to output text to the screen.
  • Use comments to explain what your code does and to make it easier to read.
  • Always test your program to make sure it does what you expect it to do.

Examples of Python Programs

Here are a few examples of Python programs you can write and run:

Example 1: Hello, World!

This program prints the phrase “Hello, World!” to the screen:

print('Hello, World!')

Example 2: Variables

This program assigns a value to a variable and then prints it to the screen:

name = 'John' print(name)

Example 3: User Input

This program prompts the user to enter a number and then prints it to the screen:

number = input('Enter a number: ') print(number)

Writing and running Python programs is a great way to learn the language and get started with programming. With its simple syntax and easy-to-learn concepts, Python is a great choice for beginners and experienced programmers alike.