/Python/Defaultdict python dict inside dict

Defaultdict python dict inside dict

Python defaultdict to dict

>>> #You can simply call dict:
>>> a
defaultdict(<type 'list'>, {'1': ['b', 'a'], '3': ['b'], '2': ['a']})
>>> dict(a)
{'1': ['b', 'a'], '3': ['b'], '2': ['a']}

# but remember that a defaultdict is a dict
# (with some special behavior, check source):
>>> isinstance(a, dict)
True

Source: stackoverflow.com

Defaultdict python dict inside dict

nums = [1, 2, 1, 1, 4, -4, 2, 2, 4, 2, 5, 7]
dict_in_dict = defaultdict(dict)
for i in range(0, len(nums), 3):
    dict_in_dict[nums[i+1]][nums[i]] = -1*nums[i+2]
dict(dict_in_dict)

# result
# {2: {1: -1, 2: -4}, 4: {1: 4}, 5: {2: -7}}

Similar codes

0 vote333 views1 answer
Blockchain private key generator
Python
2 votes407 views1 answer
How to convert gb to mb in python
Python
1 vote367 views1 answer
Sort python dictionary by date
Python
0 vote326 views1 answer
How to copy file from local to sftp using python
Python
0 vote306 views1 answer
Pandas selection row/columns
Python
35 votes342 views5 answers
Sort by dataframe
Python
0 vote321 views1 answer
Beautifulsoup find get value
Python
0 vote337 views1 answer
Python sns save plot lable axes
Python
3 votes368 views1 answer
Flask give port number
Python Flask
10 votes292 views2 answers
How to use modulo in python
Python