discard() method of set

my_set={'a','b','c','x','k'}
my_set.discard('x')
print(my_set)

{'c', 'a', 'k', 'b'}

Removing not available element

my_set={'a','b','c','x','k'}
my_set.discard('y')

Difference between discard() and remove()

my_set = {1, 2, 3}
my_set.discard(4)  # No error, even if 4 is not in the set
my_set.remove(4)   # Raises KeyError because 4 is not in the set

Use Case: Safely Removing Items

my_set = {'apple', 'banana', 'cherry'}
my_set.discard('banana')  # Safely removes banana
my_set.discard('grape')   # No error, even though grape is not present

Example 1: Using discard() in a Loop

my_set = {1, 2, 3, 4, 5}
elements_to_remove = [2, 6, 3]
for item in elements_to_remove:
    my_set.discard(item)  # Safely removes elements, no error if not present
print(my_set)  # Output: {1, 4, 5}

Example : Discarding Items Conditionally

my_set = {'apple', 'banana', 'cherry'}
if 'banana' in my_set:
    my_set.discard('banana')
print(my_set)  # Output: {'apple', 'cherry'}

Subhendu Mohapatra

Author

🎥 Join me live on YouTube

Passionate about coding and teaching, I publish practical tutorials on PHP, Python, JavaScript, SQL, and web development. My goal is to make learning simple, engaging, and project‑oriented with real examples and source code.

← Subscribe to our YouTube Channel here