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copy() method in Python List

/ Programming in Python / By

It is a method in python that copies all the content of the list to a new list. It returns a new list, it doesn’t modify the old list. Any modification of the new list (copied list) will not affect the old list. This method doesn’t take any parameters in it.

Syntax:

new_list=old_list.copy()

Example 1:

s = [“Name“, “codewindow“, “Country“, “India“]
new = s.copy()
print(new)

Output:

[‘Name‘, ‘codewindow‘, ‘Country‘, ‘India‘]

Explanation:

It copied the existing list (s) to a new list (new) and returns it.

Example 2:

s = [“Name“,”codewindow“,”Country“,”India“]
new = s.copy()
new.append(“State“)
print(“new_list”,new)
print(“old_list”,s)

Output:

new_list [‘Name‘, ‘codewindow‘, ‘Country‘, ‘India‘, ‘State‘]
old_list [‘Name‘, ‘codewindow‘, ‘Country‘, ‘India‘]

Explanation:

Here, any changes to the new list did not affect the old list as u can clearly see.

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