Python Check if Dictionary Value is Empty

To check if a dictionary value is empty in Python, you can use the len() function and check if the length of the value is 0.

d = {"a":[]}

if len(d["a"]) == 0):
    print("value 'a' is empty") 

#Output
value 'a' is empty

When working with different collections of data in programming, the ability to perform checks of certain conditions is valuable.

One such case is if you have a dictionary and want to check if a dictionary value is empty in your Python program.

To check if a dictionary value is empty, you can use the length function.

If the length of the value is 0, then the dictionary value is empty. This is true for iterable objects (lists, strings, sets, tuples, etc.)

Below shows you a simple example of how to check if a dictionary value is empty where the dictionary value is of type list in Python.

d = {"a":[]}

if len(d["a"]) == 0):
    print("value 'a' is empty") 

#Output
value 'a' is empty

If the value is a string, you can check if the string is an empty string using len() in the same way as shown below.

d = {"a":""}

if len(d["a"]) == 0):
    print("value 'a' is empty") 

#Output
value 'a' is empty

For further information on Dictionary checks, head here.

Hopefully this article has been useful for you to learn how to check if a dictionary value is empty in Python.

^{Photo by Joshua Hoehne on Unsplash}