update( ) FUNCTION

The 'update( )' Function is used to update an entry in the Dictionary using the 'Key'.

Note : The 'Key' won't be updated. Just the 'Value' associated to that 'Key' would be updated.

x = {
    5 : "Is a Number", 
    "John": "Is a Name", 
    "Python": "Is a Language"
}
x.update({5: "Is an one digit number"})
print(x)

Output :

{5: 'Is an one digit number', 'John': 'Is a Name', 'Python': 'Is a Language'}

So, in the above code we have created a 'Dictionary' using braces '{ }' and 'Key' and 'Value' pairs.

x = {
    5 : "Is a Number", 
    "John": "Is a Name", 
    "Python": "Is a Language"
}

And initialised to the variable 'x'.

Now, we are supposed to update the value of the 'Key', '5' with 'Is an one digit number'.

So, we have used the below way to update it.

x.update({5: "Is an one digit number"})

And the entry for the 'Key' '5' is updated in the 'Dictionary'.

And we get the below output,

{5: 'Is an one digit number', 'John': 'Is a Name', 'Python': 'Is a Language'}