/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 vote223 views1 answer
Is assimilation part of digestive system
Python
1 vote211 views2 answers
{:.1%} print one decimal pandas
Python
3 votes218 views2 answers
How to install pygame in python 3.8
Python
2 votes220 views2 answers
Django exclude queryset
Python
0 vote233 views2 answers
The readlines() method returns
Python
4 votes216 views2 answers
How to get runtime of a function in python
Python
0 vote180 views1 answer
WAP THAT ASKS A USER FOR A NUMBER OF YEARS AND THEN PRINTS OUT THE NUMBER OF DAYS, HOURS ,MINUTES AND SECONDS IN THAT NO. OF YEARS.
Python
0 vote218 views1 answer
Find las element of array python
Python
0 vote205 views1 answer
Python mypy cast
Python
0 vote207 views1 answer
Python nltk detecting clauses in sentences
Python