How do you quit or halt a python program without the error messages showing?
I have tried quit(), exit(), systemexit(), raise SystemExit, and others but they all seem to raise an error message saying the program has been halted. How do I get rid of this?
You are trying too hard. Write your program using the regular boilerplate:
def main():
# your real code goes here
return
if __name__ == "__main__":
main()
and just return from function main. That will get you back to the if-clause, and execution will fall out the bottom of the program.
You can have as many return statements in main() as you like.
return will stop the program
return stops function main(), not program - but after main() there is no more code to run - so Python ends program.return outside function
main. Just write modular functions that you call from main, at the same level.You would need to handle the exit in your python program. For example:
def main():
x = raw_input("Enter a value: ")
if x == "a value":
print("its alright")
else:
print("exit")
exit(0)
Note: This works in python 2 because raw_input is included by default there but the concept is the same for both versions.
Output:
Enter a value: a
exit
Just out of curiousity: Why do you want to prevent the message? I prefer to see that my program has been closed because the user forced a system exit.
quit() or exit() in your code. These functions are intended only for the interactive Python. See Python exit commands - why so many and when should each be used?you can structure your program within a function then return when you wish to halt/end the program
ie
def foo():
# your program here
if we_want_to_halt:
return
if __name__ == "__main__":
foo()
you can try the following code to terminate the program.
import sys
sys.exit()
try...except...Process finished with exit code 0sys.exit()orexit()then it ends program without any error message in terminal on Linux. How do your run script ? Where do you run this script ?Maybe message is not from script but from program which runs script.