Python dictionary; sum values of the same keys

Question

It might be simple but im just a beginner. If i have this dictionary;

ds = {\"ABab\": 6.25, \"aBab\": 6.25, \"Abab\": 6.25, \"abab\": 6.25, \"ABab\": 6.25, \"aBa         


        

Answer 1

You cannot have the same key twice in python. Every key in the dictionary must be unique. Review the documentation:

If a key occurs more than once, the last value for that key becomes the corresponding value in the new dictionary.

Your dictionary is automaticity not regarding the duplicate keys, it will always evaluate the last assigned key.

duplicate_keys = {"ABab": 6.25, "aBab": 6.25, "Abab": 6.25, "abab": 6.25, "ABab": 6.25, "aBab": 6.25, "Abab": 6.25, "abab": 6.25, "ABab": 6.25, "aBab": 6.25, "Abab": 6.25, "abab": 6.25, "ABab": 6.25, "aBab": 6.25, "Abab": 6.25, "abab": 6.25}

unique_keys = {"ABab": 6.25, "aBab": 6.25, "Abab": 6.25, "abab": 6.25}

duplicate_keys == unique_keys # True