$ python3 search-usda.py
Please select one of the following choices:
1. Search by state
2. Search by county
3. Search by median income
0. Quit

Enter selection: 4
Invalid choice, try again!
Enter selection: -1
Invalid choice, try again!
Enter selection: county
Invalid choice, try again!
Enter selection: 3
Median income? zero
Error: income must be a positive integer; please try again!
Median income? -45
Error: income must be a positive integer; please try again!
Median income? 98.4
Error: income must be a positive integer; please try again!
Median income? 200

No records found

Please select one of the following choices:
1. Search by state
2. Search by county
3. Search by median income
0. Quit

Enter selection: Quit
Invalid choice, try again!
Enter selection: 0

Goodbye!