/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 vote326 views7 answers
Code converter from java to python
Python
1 vote288 views1 answer
Control tello drone with python
Python
2 votes438 views1 answer
How to return images in flask response?
Python Flask
-2 votes330 views1 answer
Python merge list no duplicates
Python
1 vote277 views1 answer
How to loc all cells except python
Python
1 vote279 views1 answer
ImportError: No module named 'transforms3d'
Python
0 vote338 views1 answer
Return the number of times that the string "hi" appears anywhere in the given string. python
Python
0 vote285 views1 answer
Numpy move columns
Python
1 vote339 views1 answer
How to add two different times in python
Python
0 vote283 views1 answer
Python profile is not defined line_profiler
Python