Python Set remove() method

Python Set remove() method

The set.remove() method in Python removes the specified element from the set if it is present in the set else this method will raise an error if the specified item does not exist.

Syntax

set.remove(element)

Parameter

element- This parameter signifies the item to search for and later to  remove it.  

Return

This method returns the specified element from the set.

Example 1

# Python program explaining
# the set.remove() method
#initializing set1
set1 = {"mango", "banana", "apple", "tomato"}
print("Actual Set 1:",set1) 
# removing "banana" item from the set 
value= set1.remove("banana") 
# printing the removed value  
print("Element removed from set:",value) 
# printing the set after pop method
print("After the removing the value...\nNew Set: ", set1) 

Output

Actual Set 1: {'mango', 'tomato', 'banana', 'apple'}
Element removed from set: None
After the removing the value
New Set:  {'mango', 'tomato', 'apple'} 

Example 2

# Python program explaining
# the set.remove() method
#initializing set1
set1 = {1, 2,3,4,5,6,7} 
print("Actual Set 1:",set1)
# removing "banana" item from the set 
value= set1.remove() # passing no element
# will pass an TypeError as remove() takes one argument 
print("Element removed from set:",value) 
# printing the set after pop method
print("After the removing the value...\nNew Set: ", set1) 

Output

Actual Set 1: {1, 2, 3, 4, 5, 6, 7}
Traceback (most recent call last):
  File "main.py", line 8, in <module>
    value= set1.remove() # passing no element
TypeError: remove() takes exactly one argument (0 given) 

Example 3

# Python program explaining
# the set.remove() method
# initializing vowel set
vowel = {'a', 'e', 'i', 'o', 'u'}
# Deleting 'z' element
vowel.remove('z') # the element 'z' is not present in the sent 
# Updated vowel set
# will return a KeyError as the element 'z' is not present
print('Updated vowel set: ', vowel) 

Output

Traceback (most recent call last):
  File "main.py", line 8, in <module>
    vowel.remove('z') # the element 'z' is not present in the sent
KeyError: 'z'