how to replace keys in dictionary python code example

Example 1: python change a key in a dictionary

# Basic syntax:
# Approach 1:
dictionary[new_key] = dictionary[old_key]
del dictionary[old_key]

# Approach 2:
dictionary[new_key] = dictionary.pop(old_key)

Example 2: replace key of dictionary python

a_dict = {"a": 1, "B": 2, "C": 3}

new_key = "A"
old_key = "a"
a_dict[new_key] = a_dict.pop(old_key)

print(a_dict)
OUTPUT
{'B': 2, 'C': 3, 'A': 1}