Answers for "update a dictionary python"

how to update key by value in 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}

update a value in dict ython

d = {1: "one", 2: "three"}
d1 = {2: "two"}

# updates the value of key 2
d.update(d1)

#Output
{1: 'one', 2: 'two'}