Hello Stack Overflow community.

I'm currently trying to learn how to program in Python (3.5) and I've had a problem with a conversion program. Summarised, it seems like Python is ignoring the except clauses in the source code.

```
try:
    print("Welcome to CONVERSION. Choose an option.")
    print("1. Convert CELSIUS to FAHRENHEIT.")
    print("2. Convert FAHRENHEIT to CELSIUS.")
    Option = int(input("OPTION: "))
except NameError:
    print(Option, " is not a valid input.")
except ValueError:
    print(Option, " is not a valid input.")
except KeyboardInterrupt:
    print("Don't do that!")
else:
    if (Option != 1) or (Option != 2):
        print("Please input a valid option!")
    elif (Option == 1):
        try:
            Celsius = float(input("Enter value in Celsius: "))
        except ValueError:
            print(Celsius, " is not a valid input.")
        except KeyboardInterrupt:
            print("Don't do that!")
        else:
            Fahrenheit = Celsius * 1.8 + 32
        print(Celsius, "C = ", Fahrenheit, "F.")
    elif (Option == 2):
        try:
            Fahrenheit = float(input("Enter value in Fahrenheit: "))
        except ValueError:
            print(Celsius, " is not a valid input.")
        except KeyboardInterrupt:
            print("Don't do that!")
            Celsius = (Fahrenheit - 32) * ( 5 / 9 )
            print(Fahrenheit, "F = ", Celsius, "C.")
        else:
            print("That value is invalid. Try again.")

```

The full traceback, when inputting the value "wad" in the first screen:

```
Traceback (most recent call last):
File "C:\Users\user\Documents\Visual Studio 2015\Projects\TempConversion\TempConversion\TempConversion.py", line 7, in <module>
Option = int(input("OPTION: "))
ValueError: invalid literal for int() with base 10: 'wad'

 During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\user\Documents\Visual Studio 2015\Projects\TempConversion\TempConversion\TempConversion.py", line 11, in <module>
print(Option, " is not a valid input.")
NameError: name 'Option' is not defined

```