How To Run Python Source Code: Interactive Console, Command Line, and IDE

When working with Python, you have several options for running your Python source code, depending on your preferences and requirements. In this article, we will explore three common methods: running Python source code from an interactive console, the command line, and an Integrated Development Environment (IDE). We’ll provide examples for each method to help you understand how to execute your Python programs effectively.

1. Running Python Code from an Interactive Console.

  1. An interactive console, often referred to as a Python REPL (Read-Eval-Print Loop), allows you to enter Python code line by line and immediately see the results.
  2. This is an excellent way to experiment with Python and quickly test small code snippets.

1.1 Open the Interactive Console.

  1. On Windows, open the Command Prompt and type `python` or `python3` depending on your Python version.
  2. On macOS and Linux, open the Terminal and type `python` or `python3`.

1.2 Enter Python Code.

  1. Once you have the interactive console open, you can start entering Python code. For example:
    >>> print("Hello, World!")

1.3 Execute the Code.

  1. After entering your code, press the “Enter” key to execute it. You will see the output immediately.

1.4 Continue Experimenting.

  1. You can continue entering and running code snippets in the console as needed.
  2. This is great for exploring Python’s features and testing small portions of your program.

2. Running Python Code from the Command Line.

  1. Running Python code from the command line is useful when you have a complete Python script that you want to execute. Follow these steps:

2.1 Open the Command Line.

  1. On Windows, open the Command Prompt or PowerShell.
  2. On macOS and Linux, open the Terminal.

2.2 Navigate to the Directory.

  1. Use the `cd` command to navigate to the directory where your Python script is located.
    cd /path/to/your/python/script

2.3 Run the Python Script.

  1. To run your Python script, use the `python` or `python3` command followed by the script’s filename.
    python script.py
  2. Replace `script.py` with the name of your Python script.

2.4 View the Output.

  1. The script will execute, and any output or errors will be displayed in the command line.

3. Running Python Code from an IDE (Integrated Development Environment).

  1. Using an IDE provides a powerful and feature-rich environment for developing and running Python code.
  2. There are various IDEs available for Python, such as IDLE, PyCharm, Visual Studio Code, and Jupyter Notebook.
  3. You can read the below articles to learn more.
  4. How To Use Python IDLE To Write, Run, Debug Python Code Examples.
  5. How To Install Python Interpreter In PyCharm.
  6. How To Run Python Code In Visual Studio Code.
  7. How To Debug Python Code In Ipython And Jupyter Notebook.
  8. How To Run Python Script .py File In Jupyter Notebook .ipynb File And IPython.

By following these steps, you can run Python source code from an interactive console, the command line, or an IDE like Visual Studio Code. Each method has its advantages, so choose the one that best suits your development needs and preferences. Whether you’re a beginner or an experienced Python developer, mastering these techniques will help you effectively execute your Python programs.

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