How to change values of a Python dictionary?

Today, We want to share with you python change dictionary value.In this post we will show you Python Dictionary update(), hear for python dictionary update if key exists we will give you demo and example for implement.In this post, we will learn about How To Add / Append Key:value Pair To Dictionary In Python? with an example.

Python Change Values in a Dictionary

The syntax of update() is:

dict.update([other])

Change the “year” to 2022:

Example 1:

thisdict =	{
  "brand": "Ford",
  "model": "Mustang",
  "year": 1964
}

thisdict["year"] = 2022

print(thisdict)

Example : Working of update()

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

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

d1 = {3: "three"}

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

Example : update() When Tuple is Passed

d = {'x': 2}

d.update(y = 3, z = 0)
print(d)

Example

players_id = {
   'virat': 42,
   'rohit': 12.5
}
new_var = players_id['virat']
print(new_var)

Example

players_id  =  {
   'virat': 42,
   'rohit': 12.5
}
players_id['virat']  =  "Welcome"
print(players_id['virat'])

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