Extracting the values from nested dictionary in python

Question

d= {0: {'Name': 'MN', 'volt': 1.0, 'an': 0.0}, 
    1: {'Name': 'LT', 'volt': 1.0, 'an': 5.8},
    2: {'Name': 'CK', 'volt': 1.0, 'an': 2.72}, 
    3: {'Name': 'QL', 'volt': 1.0, 'an': 0.33}}

I am trying to create a matrix from the above nested dictionary that would result in the following output:

[MN 1.0 0.0
 LT 1.0 5.8
 CK 1.0 2.72
 QL 1.0 0.33]

Using.values() function in python would result in the key names as well.

Answer 1

I guess you can them in a list like this

>>> d = {0: {'Name': 'MN', 'volt': 1.0, 'an': 0.0}, 
         1: {'Name': 'LT', 'volt': 1.0, 'an': 5.8},
         2: {'Name': 'CK', 'volt': 1.0, 'an': 2.72}, 
         3: {'Name': 'QL', 'volt': 1.0, 'an': 0.33}}
>>> [list(i.values()) for i in d.values()]
[['MN', 1.0, 0.0],
 ['LT', 1.0, 5.8],
 ['CK', 1.0, 2.72],
 ['QL', 1.0, 0.33]]

You iterate over the values of the outer dictionary and then again, extract the values of interior dictionaries via i.values during iteration, store them in a list with list-comprehension.

If you want them flattened in a list

>>> sum([list(i.values()) for i in d.values()], [])
['MN', 1.0, 0.0, 'LT', 1.0, 5.8, 'CK', 1.0, 2.72, 'QL', 1.0, 0.33]