How to Delete an Item from a Set in Python

Representation of data in a Set you can find in Python. Here are the two methods to delete an item from a Set. In Python, a Set is a datatype and is an unordered collection without duplicate items.

Methods you need to delete an item from a Set

• discard
• remove

Discrd Vs. Remove

• discard() will not raise an error if the item to remove does not exist.
• The remove() will raise an error if the item does not exist.

How to understand discard and remove methods

Python program:

#Prints all the Set items

food = {"pasta", "burger", "hot dog", "pizza"}

print(food)

# Prints the Set items without pasta

food.discard("pasta")

print(food)

# Prints the Set items without burger and pasta

food.remove("burger")

print(food)

# The next two lines try to remove an item that isn't in the set!

food.discard("pasta")  # this will not report an error

food.remove("pasta")   # this will report an error

The output:

{'pasta', 'burger', 'pizza', 'hot dog'}

{'burger', 'pizza', 'hot dog'}

{'pizza', 'hot dog'}

Traceback (most recent call last):

  File "main.py", line 12, in <module>

    food.remove("pasta")   # this will report an error

KeyError: 'pasta'

** Process exited - Return Code: 1 **

Press Enter to exit terminal

Related

• Job ready Python: A Quick Reference Book