Posted on February 8, 2023 (Updated on July 10, 2025)

IDLE keeps restarting (RESTART: Shell) when running arcpy.CopyRaster_management

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Why does my Python shell keep restarting?

Buggy RESTART in Python occurs if the user subprocess crashes. This Crashes can come from a bug in your program (infinite loop that full memory for exemple) or from a corrupted OS.
 

How do I restart IDLE shell?

To execute a file in IDLE, simply press the F5 key on your keyboard. You can also select Run → Run Module from the menu bar. Either option will restart the Python interpreter and then run the code that you’ve written with a fresh interpreter.

How do I fix IDLE startup failure in Python?

Deleting the erroneously named python file solved the problem. So – look for ANY files (in the folder you are working with or indeed the root folder) that are named after any reserved words. Delete them. Hopefully it’ll work!
 

How do you fix a constant restart loop?

If any problem is detected, Startup Repair will attempt to fix Windows 10 reboot loop. If Startup Repair doesn’t fix the issue, you can go to “Command Prompt” under “Advanced options” and run the following command: Type “Bootrec /RebuildBcd” (without quotes) and then press Enter.
 

How do you stop a IDLE shell?

Ctrl+C generally works, but not if it’s preventing IDLE from working properly (at least on Windows). In that case, you have to kill the process.

How do I debug IDLE in Python?

Find & Fix Code Bugs in Python: Debug With IDLE

  1. Step 1: Make a Guess About Where the Bug Is Located.
  2. Step 2: Set a Breakpoint and Inspect the Code.
  3. Step 3: Identify the Error and Attempt to Fix It.
  4. Step 4: Repeat Steps 1 to 3 Until the Bug Is Gone.
  5. Alternative Ways to Find Bugs.


How do I stop a Python loop from restarting?

How do you reset a loop in Python? You can’t – well not from inside the loop. The only way to start the loop again is to run that code again.

How do I stop Python shell running?

Ctrl + C on Windows can be used to terminate Python scripts and Ctrl + Z on Unix will suspend (freeze) the execution of Python scripts. If you press CTRL + C while a script is running in the console, the script ends and raises an exception.
 

How do I stop a Python script from closing immediately?

The solution I use is to create a bat file. When you run the bat file it will run the python program and pause at the end to allow you to read the output. Then if you press any key it will close the window. Save this answer.