Merging two lists into dictionary while keeping duplicate data in python

Question

Hi, I want to merge two lists into one dictionary. Suppose I have two lists such as below

list_one = [\'a\', \'a\', \'c\', \'d\']

list_two = [1,2,3,4]

Answer 1

As other answers have pointed out, dictionaries have unique keys, however, it is possible to create a structure to mimic the behavior you are looking for:

class NewDict:
   def __init__(self, *values):
       self.values = list(zip(*values))
   def __getitem__(self, key):
        return [b for a, b in sorted(self.values, key=lambda x:x[0]) if a == key]
   def __repr__(self):
       return "{}({})".format(self.__class__.__name__, "{"+', '.join("{}:{}".format(*i) for i in sorted(self.values, key=lambda x:x[0]))+"}")

list_one = ['a', 'a', 'c', 'd']
list_two = [1,2,3,4]
d = NewDict(list_one, list_two)
print(d['a'])
print(d)

Output:

[1, 2]
NewDict({a:1, a:2, c:3, d:4})