Python Dictionary Of Lists Of Dictionaries

I would like to be able to access data from a file, organizing them into a structure that I think should be a dictionary of lists of dictionaries, from what I understand, probably

Solution 1:

It seems like your schema is not ideal (although it is difficult to tell without understanding what you are storing). From looking at your data, KEY_1, R_1, and A_1 should be dictionaries rather than lists. By simplifying your structure, you will be to use [ID_FILE][KEY_1][R_2][A_3][P_2].b

Solution 2:

Thanks to Steven Rumbalski to indicate to me that tool, PyCifRW, but, answering to my topic's question, the needed structure is a dictionary of dictionaries, to achieve that gool:

r_list = ['20', '21']
dictionary = {}
r_dict = {}
a_dict = {}
for r in range(0,len(r_list)):
    r = r_list[r]
    dictionary['C'] = r_dict
    r_dict[r] = a_dict

print dictionary
print dictionary['C']

"""output:

{'C': {'20': {}, '21': {}}}
{'20': {}, '21': {}}

equal to:

dictionary = {'C': {
                    '20': {},
                    '21': {}
                }
            }
"""