Question

This is how I have been searching for objects in python. Is there any more efficient (faster, simpler) way of doing it?

Obs: A is a known object.

for i in Very_Long_List_Of_Names:
    if A == My_Dictionary[i]:
        print: "The object you are looking for is ", i
        break

Answer 1

The one liner would be: (i for i in List_of_names if A == My_dictionary[i]).next().

This throws a KeyError if there is an item in List_of_names that is not a key in My_dictionary and a StopIteration if the item is not found, else returns the key where it finds A.