How do i update nested dictionaries in Python?

Question

I have some data, let's assume it looks like this:

arr = [10, 90, 45]

And a dictionary, looking like this:

mydict = {}

I want to append the data from arr to the dictionary and i would like to store it like this:

mydict = {{'one': 10}, {'one': 90}, {'one': 45}}

I tried a simple loop:

for x in arr:
    mydict.update({'one': x})

But that doesn't work, since it will just overwrite the records.

Is there any way to do this in Python?

Answer 1

You could simply do:

arr = [10, 90, 45]

lst = []
for e in arr:
    lst.append({'one': e})

print(lst)

Output

[{'one': 10}, {'one': 90}, {'one': 45}]

Or if you prefer alist comprehension :

lst = [{'one' : e} for e in arr]

Answer 2

you can use map

arr = [10, 90, 45]
arrName = ['one', 'two', 'tree']
dictionary = dict(map(lambda(x, y:{x: y}))

or zip

arr = [10, 90, 45]
arrName = ['one', 'two', 'tree']
dictionary = dict(zip(arrName, arr))