Python Tutorials

Python Programs

How to Check if a Dictionary is Empty in Python

How to Check if a Dictionary is Empty in Python ?

Answer

To check if a dictionary is empty in Python, you can use the `not` operator or the `len()` function. An empty dictionary evaluates to `False` when converted to a boolean.


✐ Examples

1 Checking if a Dictionary is Empty Using the `not` Operator

We can check if a dictionary is empty in Python using the `not` operator. This example demonstrates how to check if a dictionary is empty and print a message based on the result.

For example,

  1. We start by declaring and initializing a dictionary named my_dict.
  2. We use the `not` operator to check if the dictionary is empty.
  3. We print a message based on whether the dictionary is empty or not.

Python Program

my_dict = {}

# Check if the dictionary is empty using the not operator
if not my_dict:
    print('The dictionary is empty.')
else:
    print('The dictionary is not empty.')

Output

The dictionary is empty.

2 Checking if a Dictionary is Empty Using the `len()` Function

We can check if a dictionary is empty in Python using the `len()` function. This example demonstrates how to check if a dictionary is empty and print a message based on the result.

For example,

  1. We start by declaring and initializing a dictionary named my_dict.
  2. We use the `len()` function to check if the dictionary is empty.
  3. We print a message based on whether the dictionary is empty or not.

Python Program

my_dict = {}

# Check if the dictionary is empty using the len() function
if len(my_dict) == 0:
    print('The dictionary is empty.')
else:
    print('The dictionary is not empty.')

Output

The dictionary is empty.

Summary

In this tutorial, we learned How to Check if a Dictionary is Empty in Python language with well detailed examples.


More Python Dictionaries Tutorials

  1. How to create an Empty Dictionary in Python ?
  2. How to create a Dictionary with Initial Key-Value Pairs in Python ?
  3. How to Print a Dictionary in Python ?
  4. How to Add a Key-Value Pair to a Dictionary in Python ?
  5. How to Set a Default Value for a Key in a Dictionary in Python ?
  6. How to Update the Value for a Key in a Dictionary in Python ?
  7. How to Check if a Dictionary is Empty in Python ?
  8. How to Check if a Key Exists in a Dictionary in Python ?
  9. How to Check if a Value Exists in a Dictionary in Python ?
  10. How to Get the Value Associated with a Key in a Dictionary in Python ?
  11. How to Remove a Key-Value Pair from a Dictionary in Python ?
  12. How to Remove Key-Value Pairs from a Dictionary Based on Values in Python ?
  13. How to Clear all Key-Value Pairs from a Dictionary in Python ?
  14. How to Iterate over Keys in a Dictionary in Python ?
  15. How to Iterate over Values in a Dictionary in Python ?
  16. How to Iterate over Entries (Key-Value Pairs) in a Dictionary in Python ?
  17. How to Get the Size (Number of Key-Value Pairs) of a Dictionary in Python ?
  18. How to Convert a Dictionary to an Array of Keys in Python ?
  19. How to Convert a Dictionary to an Array of Values in Python ?
  20. How to Convert a Dictionary to an Array of Key-Value Pairs in Python ?
  21. How to Merge Two Dictionaries in Python ?
  22. How to Clone a Dictionary in Python ?
  23. How to Check if Two Dictionaries are Equal in Python ?
  24. How to Sort a Dictionary by Keys in Python ?
  25. How to Sort a Dictionary by Values in Python ?
  26. How to Filter a Dictionary Based on Keys in Python ?
  27. How to Filter a Dictionary Based on Values in Python ?
  28. How to Reduce Values in a Dictionary to a Single Value in Python ?
  29. How to Convert an Array of Key-Value Pairs to a Dictionary in Python ?
  30. How to Convert a Dictionary to a JSON String in Python ?
  31. How to Convert a JSON String to a Dictionary in Python ?
  32. How to Swap Keys and Values in a Dictionary in Python ?
  33. How to Create a Dictionary of Dictionaries in Python ?
  34. How to Iterate Over a Dictionary of Dictionaries in Python ?