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+--- Thread: Is it Possible to pause a script? (/thread-39719.html)
Is it Possible to pause a script? - tester_V - Mar-31-2023
Greetings!
I was wondering if it is possible to pause a Python script when it is running.
Ctrl+C aborts a script,
Is there anything I can do to pause it?
Thank you.
RE: Is it Possible to pause a script? - ibreeden - Apr-01-2023
(Mar-31-2023, 09:58 PM)tester_V Wrote: Is there anything I can do to pause it?Yes, there is a way. In Unix/Linux there is a rich number of signals you can send to a process. I am not sure what is implemented of it in Windows.
I understand you run your program from the terminal/dosbox, for you say you do a <Ctrl>C. This sends the signal SIGINT (Interrupt) to the process. You can catch those signals. Read all about it in "signal — Set handlers for asynchronous events".
Example:
#! /usr/bin/env python3
import signal
import time
def handler(signum, frame):
input("Progam paused. Hit enter to resume")
return
signal.signal(signal.SIGINT, handler)
for i in range(10):
print(i)
time.sleep(1)Output:$ ./signalexample.py
0
1
2
^CProgam paused. Hit enter to resume
3
4
5
6
^CProgam paused. Hit enter to resume
7
8
9RE: Is it Possible to pause a script? - tester_V - Apr-02-2023
Outstanding!
ibreeden, thank you very much!
RE: Is it Possible to pause a script? - DeaD_EyE - Apr-03-2023
Pause a process: CTRL + Z
Continue the process: fg
RE: Is it Possible to pause a script? - tester_V - Apr-05-2023
(Apr-03-2023, 01:21 PM)DeaD_EyE Wrote: Pause a process: CTRL + Z
Continue the process: fg
No words! You are Da Man
and I'm probably confused but CTRL+Z does not work...What does it mean "Continue the process: fg" ?
Thank you
RE: Is it Possible to pause a script? - Gribouillis - Apr-05-2023
(Apr-05-2023, 05:50 AM)tester_V Wrote: I'm probably confused but CTRL+Z does not work...It works if you start the program from the linux terminal and then type ^Z in the terminal.
If you want to do the same outside the terminal, you could perhaps send SIGTSTP to the process to pause it and then SIGCONT to resume it.
RE: Is it Possible to pause a script? - tester_V - Apr-05-2023
I see.
Thank you!
You guys are awesome!