Program to check if a particular key is present in the dictionary in Python

In the basic python programming article, we are going to learn

• program to find whether a particular key is present in the dictionary in python

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Program to check if a particular key is present in the dictionary in Python

The program is as follows:

 

# Owner : TutorialsInhand Author : Devjeet Roy

db = {
    1 : "Devjeet Roy",
    2 : "Ajit Agarwal",
    3 : "Dhananda Seth",
    4 : "Dhanush Singh"
}

search_key = int(input("Enter the key to be search for: "))

if search_key in db.keys():
    print("The key has been found!")
else:
    print("The key is not found!")

The output of the program is as follows:

 

PS C:\Users\DEVJEET\Desktop\tutorialsInHand> python code.py
Enter the key to be search for: 2
The key has been found!
PS C:\Users\DEVJEET\Desktop\tutorialsInHand> python code.py
Enter the key to be search for: 99
The key is not found!

Few important tips about the program

1. If the name of the dictionary is "db", the "db.keys()" returns us the name of all the keys of that dictionary in an iterable format. We can convert that to a list or tuple.

2. The "in" operator is used to check if a particular key is present in the dictionary.