Python Program to check if a Given key exists in a Dictionary

In this article, we will show you, How to write a Python Program to check if a Given key exists in a Dictionary with practical example.

Before you start, please refer Dictionary article to understand everything about Dictionaries.

Python Program to check if a Given key exists in a Dictionary Example 1

In this python program we are using if statement, and keys function to check whether the key exists in this dictionary or not. If true, it will print the Key Value.

# Python Program to check if a Given key exists in a Dictionary

myDict = {'a': 'apple', 'b': 'Banana' , 'o': 'Orange', 'm': 'Mango'}
print("Dictionary : ", myDict)

key = input("Please enter the Key you want to search for: ")

# Check Whether the Given key exists in a Dictionary or Not
if key in myDict.keys():
    print("\nKey Exists in this Dictionary")
    print("Key = ", key, " and Value = ", myDict[key])
else:
    print("\nKey Does not Exists in this Dictionary")

OUTPUT

Python Program to check if a Given key exists in a Dictionary Example 2

This program is another approach to check the given key is present in a dictionary or not.

# Python Program to check if a Given key exists in a Dictionary

myDict = {'a': 'apple', 'b': 'Banana' , 'o': 'Orange', 'm': 'Mango'}
print("Dictionary : ", myDict)

key = input("Please enter the Key you want to search for: ")

# Check Whether the Given key exists in a Dictionary or Not
if key in myDict:
    print("\nKey Exists in this Dictionary")
    print("Key = ", key, " and Value = ", myDict[key])
else:
    print("\nKey Does not Exists in this Dictionary")

OUTPUT

Python Program to check if key exists in a Dictionary Example 3

In this program, we are using get function to check whether key exists or not.

# Python Program to check if a Given key exists in a Dictionary

myDict = {'a': 'apple', 'b': 'Banana' , 'o': 'Orange', 'm': 'Mango'}
print("Dictionary : ", myDict)

key = input("Please enter the Key you want to search for: ")

# Check Whether the Given key exists in a Dictionary or Not
if myDict.get(key) != None:
    print("\nKey Exists in this Dictionary")
    print("Key = ", key, " and Value = ", myDict[key])
else:
    print("\nKey Does not Exists in this Dictionary")

OUTPUT