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How to sort a nested Python dictionary?

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How to sort a nested Python dictionary?

PythonProgramming

Can anyone explain the concept sort a nested Python dictionary clearly?

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1 Answer

karthikeya Boyini

Karthikeya Boyini

Answered on 18th Apr, 2018

If you have a dictionary of the following format:

{

'KEY1':{'name':'foo','data':1351,'completed':100},

'KEY2':{'name':'bar','data':1541,'completed':12},

'KEY3':{'name':'baz','data':58413,'completed':18}

}

And you want to sort by the key, completed within each entry, in a ascending order, you can use the sorted function with a lambda that specifies which key to use to sort the data. For example,

my_collection = {

'KEY1':{'name':'foo','data':1351,'completed':100},

'KEY2':{'name':'bar','data':1541,'completed':12},

'KEY3':{'name':'baz','data':58413,'completed':18}

}

sorted_keys = sorted(my_collection, key=lambda x: (my_collection[x]['completed']))

print(sorted_keys)

This will give the output:

['KEY2', 'KEY3', 'KEY1']