Of course! The term "Python Shell Notepad" can mean a few different things. I'll cover the most common interpretations, from the simplest built-in tools to more powerful third-party applications.

Let's break it down into three categories:

1. The Built-in Python Shell (IDLE): The default, simple tool that comes with Python.
2. Using a Text Editor with a Shell: A very common workflow for professional developers.
3. Advanced IDEs (Integrated Development Environments): Powerful, all-in-one tools that combine a notepad, shell, and much more.

The Built-in Python Shell (IDLE)

This is the most direct answer to your request. When you install Python, you also get a simple application called IDLE. It has two main windows:

• The Shell Window: An interactive command-line where you can type Python code and see the results immediately.
• The Editor Window: A basic text editor where you can write, save, and run multi-line Python scripts (your "notepad").

How to Use IDLE

Step 1: Open IDLE

• Windows: Search for "IDLE" in the Start Menu.
• macOS: Open Finder -> Applications -> Python -> IDLE.
• Linux: It's usually in your application menu, or you can run idle from a terminal.

Step 2: The Shell (Interactive Mode) When you first open IDLE, you'll see the >>> prompt. This is the shell. You can type any Python command and press Enter to execute it.

>>> print("Hello, from the IDLE Shell!")
Hello, from the IDLE Shell!
>>> x = 10
>>> y = 20
>>> x + y
30
>>> # You can even import modules
>>> import math
>>> math.sqrt(144)
12.0

Step 3: The Editor (Your "Notepad") To write a multi-line script, you need the editor window.

1. Go to the Shell window and click File -> New File. A blank editor window will appear.

2. Type your Python code in this new window. For example, create a file named hello_script.py:

   # This is my script in the IDLE editor
   name = input("What is your name? ")
   greeting = f"Hello, {name}! Welcome to Python scripting."
   print(greeting)

3. Save the file: Go to File -> Save As... and save it as hello_script.py.

   
   （图片来源网络，侵删）

4. Run the script:

   • You can press F5 on your keyboard.
   • Or go to Run -> Run Module.

The output will appear in the Shell window:

What is your name? Alice
Hello, Alice! Welcome to Python scripting.

Pros of IDLE:

• Comes pre-installed with Python.
• Simple and easy to get started with.
• Color-codes your code (syntax highlighting).

Cons of IDLE:

• Very basic features (no auto-completion, no debugger, simple interface).
• Not suitable for large projects.

The Professional Workflow: Text Editor + Terminal

This is the most common and flexible way developers work. You use a dedicated text editor for writing code (your "notepad") and a separate terminal (the "shell") to run it.

Recommended Text Editors

• Visual Studio Code (VS Code): The most popular choice. It's free, powerful, and has excellent Python support.
• Sublime Text: Very fast, lightweight, and has a "beautified" interface.
• Notepad++: A classic for Windows users, fast and simple.
• PyCharm Community Edition: A full IDE (see next section), but its editor is top-notch.

Step-by-Step Workflow with VS Code

Step 1: Install a Text Editor

• Install Visual Studio Code.

Step 2: Install the Python Extension

• Open VS Code.
• Go to the Extensions view (click the icon on the left or press Ctrl+Shift+X).
• Search for "Python" by Microsoft and click Install.

Step 3: Write Your Code (The "Notepad")

• Create a new folder for your project (e.g., my_project).

• Open that folder in VS Code (File -> Open Folder...).

• Create a new file named app.py.

• Write your code in app.py:

  # app.py
  def greet(name):
      return f"Hi, {name}! This is VS Code."
  if __name__ == "__main__":
      user = "Developer"
      message = greet(user)
      print(message)

Step 4: Run Your Code (The "Shell")

• Open the Integrated Terminal in VS Code (View -> Terminal or press `Ctrl+``).
• You'll see a command prompt at the bottom of the screen.
• Type python app.py and press Enter.

The Output: The terminal will execute your script and display the result.

> python app.py
Hi, Developer! This is VS Code.

Why this workflow is powerful:

• Flexibility: You can use any terminal (PowerShell, Bash, etc.) and any editor you like.
• Powerful Editor: Features like IntelliSense (auto-completion), linting (finding errors), and debugging are built-in.
• Version Control: It's easy to use Git to track your changes.

Advanced IDEs (Integrated Development Environments)

These are all-in-one applications that combine a text editor, a shell, a debugger, project management, and many other tools into a single package. They are like a super-powered "Python Shell Notepad".

Top Python IDEs

• PyCharm: The king of Python IDEs. The Community Edition is free and fantastic. It has an integrated terminal, a powerful debugger, and excellent project management.
• Spyder: Designed specifically for scientific Python (with NumPy, Matplotlib, etc.). It feels like a mix of MATLAB and an IDE, with a variable explorer and console built-in.
• Thonny: Another beginner-friendly IDE that comes bundled with some Python installers. It has a very simple, clean interface and focuses on teaching.

Example: PyCharm

1. Install PyCharm Community Edition from the JetBrains website.
2. Create a New Project: Give it a name and a location.
3. Write Code: PyCharm will open main.py for you. You can type your code directly into the editor.
4. Run the Code:
   • Click the green "Run" button in the top-right.
   • Or right-click in the editor and select "Run 'main'".
   • Or use the shortcut Shift + F10.

The output will appear in the Run tool window at the bottom, which acts as your shell.

Summary Table

Recommendation:

• If you are just starting out, start with IDLE to understand the basics of the Python shell and scripts.
• As soon as you feel comfortable, switch to the VS Code + Terminal workflow. It's the most practical and widely used method.
• If you find yourself working on large, complex projects, PyCharm will be your best friend.