Why this reverse lookup function not working

[Emekadavid]

input returns str and the values in the dict are int, so the user input and [any] value from the dict will never be equal.
Do you really want to print 'not found' for each not equal value? Also there are better ways to iterate over dict:

for key, value in dict.items():
    # do something with key and value

Thanks. This solution is more intuitive and it worked.