Check If a Value Exists in a Dictionary in Python - Code Allow

Check If a Value Exists in a Dictionary in Python

Post published:June 1, 2023
Post category:Dictionary / Python

Checking if a value exists in a dictionary allows you to verify whether a specific value is present as a value in the dictionary. In this blog post, we will explore different methods to check if a value exists in a dictionary in Python.

Method 1: Using the in Keyword

# Method 1: Using the in Keyword
my_dict = {"name": "John", "age": 30, "city": "New York"}
value = "John"
if value in my_dict.values():
    print("Value exists in the dictionary")
else:
    print("Value does not exist in the dictionary")

Python
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# Method 1: Using the in Keywordmy_dict = {"name": "John", "age": 30, "city": "New York"}value = "John"if value in my_dict.values():    print("Value exists in the dictionary")else:    print("Value does not exist in the dictionary")​

Output:

Value exists in the dictionary

Method 2: Using the values() Method

# Method 2: Using the values() Method
my_dict = {"name": "John", "age": 30, "city": "New York"}
value = "John"
if value in my_dict.values():
    print("Value exists in the dictionary")
else:
    print("Value does not exist in the dictionary")

Python
 
# Method 2: Using the values() Methodmy_dict = {"name": "John", "age": 30, "city": "New York"}value = "John"if value in my_dict.values():    print("Value exists in the dictionary")else:    print("Value does not exist in the dictionary")​

Output:

Value exists in the dictionary