I'm trying to loop through a list of tuples and assign certain values in the tuple as a key to a dictionary, and other values of the tuple to the values of the dictionary. For some reason, every time I update an indexed value of a tuple key in the dictionary, the same indexed values for all of the keys is updated.
a = [('g', 'h', 'i', 1), ('a', 'b', 'c', 6), ('d', 'e', 'f', 1)]
b = [('a', 'b', 'c', 2), ('d', 'e', 'f', 5)]
Where the first three values of the tuple will become keys in a dictionary, and the last value will become a value in a list for that key.
output_dict = {}
tuple_lists = [a,b]
empty_values = [0]*len(tuple_lists)
for i, tuple_list in enumerate(tuple_lists):
for key_value in tuple_list:
key = key_value[:len(key_value)-1]
value = key_value[len(key_value)-1:][0]
if key not in output_dict:
output_dict[key] = empty_values
output_dict[key][i] = value
else:
output_dict[key][i] = value
This returns:
{('g', 'h', 'i'): [1, 5], ('a', 'b', 'c'): [1, 5], ('d', 'e', 'f'): [1, 5]}
When I thought it should return:
{('g', 'h', 'i'): [1, 0], ('a', 'b', 'c'): [6, 2], ('d', 'e', 'f'): [1, 5]}
The only hint I have is that the id for two different keys in output_dict are the same:
id(output_dict[('g', 'h', 'i')])
returns the same value as:
id(output_dict[('a', 'b', 'c')])
