sort a dict by key in python code example

Example 1: python sort dict by key

A={1:2, -1:4, 4:-20}
{k:A[k] for k in sorted(A)}

output:
{-1: 4, 1: 2, 4: -20}

Example 2: sort dictionary by key

dictionary_items = a_dictionary.items()
sorted_items = sorted(dictionary_items)