update value in dictionary python code example

Example 1: change dictionary value python

my_dict  =  {
   'foo': 42,
   'bar': 12.5
}
my_dict['foo']  =  "Hello"
print(my_dict['foo'])
#This will give the output:

'Hello'

Example 2: python dict update

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

# updates the value of key 2
d.update(d1)
d1 = {3: "three"}
# adds element with key 3
d.update(d1)

# {1: 'one', 2: 'two', 3: 'three'}

Example 3: python update dictionary

diction[element] = value
# if element not in diction, create new element

Example 4: how to modify the dict in python

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

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

d1 = {3: "three"}

# adds element with key 3
d.update(d1)
print(d)

Example 5: how to update dictionary in python

>> a = { "a" : 1, "b" : 2 }
>> b = { "c" : 3, "d" : 4 }
>> a
{'a': 1, 'b': 2}
>> b
{'c': 3, 'd': 4}
>> a.update(b)
>>a
{"a":1,"b":2,"c":3,"d":4}

Example 6: updating a value in dictionary python

dictionary["key"] = newvalue