idle an ide for python bundled with the program release click on idle (python gui) in the start menu...
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IDLE An IDE for Python bundled with the program release
Click on IDLE (Python GUI) in the Start menu under the Python program group
Get the IDLE Python Shell window, like the Python command line
Under the File menu, click New Window (or Ctrl+N)
Gives a window to compose a new Python file (module)
Type in the new code
Note the color coding
In the Run menu, click Run Module (or F5)
If you didn’t save the file, you get an alert
Click OK, and a save window pops up
Then program output (and input, if any) occurs in the Python Shell
When you start a new IDLE session, to open this file again in a program window,
click Open in the File menu in the Python Shell, and
navigate to this file
Or put the mouse cursor on Recent Files in the File menu, and click on this file in the resulting list of recently accessed files
It's common to write a .py in some editor (e.g., Notepad++) then open and run it in IDLE
Correct errors directly in the IDLE program window
Notepad++ will ask whether you want to update your file to what has been changed in IDLE (You generally do)
In the Windows explorer, if you're in a folder with a .py file, right click on its icon to pop up a menu of operations on it
Click on Edit with IDLE
Opens an IDLE program window with the contents of that file
Clicking Run Module in the Run menu opens IDLE Python Shell window in which the file is execute
Files with just function or class definitions ("modules") don't produce output when they're run
The prompt advances in the IDLE Python Shell (and nothing else)
In the Shell, at the prompt, can now call the functions and classes defined in the file
Running the file has executed the function and class definitions
IDLE locates syntax errors
Suppose we omit the ‘:’ in
while b < n
Selecting Run Module in the Run menu of the program window results in an alert
The error is highlighted in the listing in the program window
Dismiss the alert and provide the missing colon
The highlighting goes away
To reproduce a previous command, type the first character or so (enough so it’s the 1st command starting with that sequence in a search back through the history) then type Alt-p
The up-arrow key doesn’t work for moving back in the history
When you come to the opening ‘(‘ for the argument list of a function (predefined or user-defined), IDLE shows you the signature for that function—e.g.,