Table of Contents
The copy() method returns a shallow copy of the set.
A set can be copied using = operator in Python. For example:
numbers = {1, 2, 3, 4}
new_numbers = numbers
The problem with copying the set in this way is that if you modify the numbers set, the new_numbers set is also modified.
numbers = {1, 2, 3, 4}
new_numbers = numbers
new_numbers.add(5)
print('numbers: ', numbers)
print('new_numbers: ', new_numbers)
Output
numbers: {1, 2, 3, 4, 5}
new_numbers: {1, 2, 3, 4, 5}
However, if you need the original set to be unchanged when the new set is modified, you can use the copy() method.
The syntax of copy() is:
set.copy()
1. copy() Parameters
It doesn’t take any parameters.
2. Return Value from copy()
The copy() method returns a shallow copy of the set.
3. Example 1: How the copy() method works for sets?
numbers = {1, 2, 3, 4}
new_numbers = numbers.copy()
new_numbers.add(5)
print('numbers: ', numbers)
print('new_numbers: ', new_numbers)
Output
numbers: {1, 2, 3, 4}
new_numbers: {1, 2, 3, 4, 5}
Related posts:
Python slice()
Python timestamp to datetime and vice-versa
Python List
Python abs()
Python Program to Find the Square Root
Python hex()
Python max()
Python Function Arguments
Python chr()
Deep Learning with Python - Francois Chollet
Python Errors and Built-in Exceptions
Python enumerate()
Python String splitlines()
Python Program to Display Powers of 2 Using Anonymous Function
Python Program to Add Two Matrices
Python Tuple index()
Python Tuple
Python vars()
Python Program to Convert Kilometers to Miles
Python Package
Python String swapcase()
Python id()
Python input()
Python Global, Local and Nonlocal variables
Python Set difference()
Python zip()
Python String rsplit()
Python Program to Check If a List is Empty
Python any()
Python Numbers, Type Conversion and Mathematics
Python Dictionary values()
Python Deeper Insights into Machine Learning - Sebastian Raschka & David Julian & John Hearty
