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The Python IDLE Shell comes as part of the IDLE (Integrated Development and Learning Environment) application, which is bundled with the default Python installation on Windows and macOS. On Linux, it may need to be installed separately via your package manager (e.g., sudo apt-get install idle) .
When you install Python from python.org, IDLE is included automatically. You can launch it from:
Windows: Start Menu → Search for IDLE (Python 3.x)
macOS: Applications → Python 3.x → IDLE
Linux: After installing, run idle3 from the terminal or find it in your app menu
Once opened, IDLE starts in the Python Shell window, which is an interactive interpreter (REPL). This allows you to type Python commands and see results immediately.
Example: Using the IDLE Shell
# In the IDLE Shell (>>> prompt)print("Hello from IDLE!")x = 5x * 2Copied!✕CopyOutput:
Hello from IDLE!10Copied!✕CopyHere, each command is executed instantly, making it ideal for testing small code snippets.
Key Features of IDLE Shell
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