/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 vote220 views6 answers
Python3 vowels and consonants filter
Python
0 vote254 views1 answer
Pass context data with templateview in django
Python Django
2 votes226 views1 answer
Python method to check for uppercase character
Python
14 votes228 views1 answer
Play videos in python
Python
0 vote227 views1 answer
Find no of 1's in a binary number
Python
1 vote245 views1 answer
FizzBuzz FizzBuzz is a well known programming assignment, asked during interviews.
Python
78 votes241 views6 answers
Python check version
Python
87 votes219 views5 answers
Python update pip3
Python
1 vote229 views1 answer
How to get the size of an object in python
Python
1 vote239 views1 answer
Get all type of image in folder python
Python