having problems with python error handlers

Question

hello I am pretty new into python , but I am trying to handle errors, however when I try to ctrl + C or L I got input > ^Cerror which it should be only display error and not ^C or ^L how can I fix this ?

except KeyboardInterrupt:
    print("error")

except Exception as e:
    raise e

Answer 1

You can back up and overwrite it, but you can't "fix" it. That character comes from the keyboard echo of the symbiont terminal: your stdin processor is set to echo (print to screen) whatever is typed. That ^C couplet is printed by this I/O processing before your program gets to handle the exception. Thus, the \\r option (or a sequence of backspaces, \\b ) is likely your best remedy.

import sys 

try:
    while True:
        string = input("Show me something")

except KeyboardInterrupt:
    print("\b\b  error")

except Exception as e:
    raise e

Output, with CTRL-C at keyboard:

Show me something  error

If you want to wipe out the entire input line, use \\r instead:

except KeyboardInterrupt:
print("\rerror", " "*80)

Output:

Show me something   -- this line appears until I hit CTRL-C.  Replaced by
error