difference_update method of set in Python

Overview:

The method difference_update() removes elements of a set as specified by the another set.
In other words, the difference between the original set and another set is calculated, which is updated as the contents of the original set.

Example:

# Example Python program that removes
# the elements from a set as specified by another set
brass = {"Trumpet", "Bugle", "French Horn", "Bass Trambone", "Piccola Trumpet", "Tuba"}
remove = {"Piccola Trumpet"}
print("Brass instruments:")
print(brass)

# Remove a set of instruments
brass.difference_update(remove)

# Print the new set
print("New brass instruments:")
print(brass)

Output:

Brass instruments:

{'Tuba', 'Piccola Trumpet', 'Bugle', 'Trumpet', 'Bass Trambone', 'French Horn'}

New brass instruments:

{'Tuba', 'Bugle', 'Trumpet', 'Bass Trambone', 'French Horn'}

Difference_update method of set in Python

Overview:

Example:

Output: