try except

 

The General Solution: try except

As with any exception, you can always use the try except block to isolate the potential exception-raising code and provide a backup solution.

You can use the try except block in a similar example as before, but this time providing a default message to be printed should a KeyError be raised in the normal case:

 1# ages.py
 2
 3ages = {'Jim': 30, 'Pam': 28, 'Kevin': 33}
 4person = input('Get age for: ')
 5
 6try:
 7    print(f'{person} is {ages[person]} years old.')
 8except KeyError:
 9    print(f"{person}'s age is unknown.")

https://realpython.com/python-keyerror/