How can I delete the last n elements from an array in Python?

Python: Python is a popular programming language. It was created by Guido van Rossum, and released in 1991.

How can I delete the last n elements from an array in Python?

method 1: Using len() + list slicing

len() -It is used to find the length of the array. 
list = [1,2,3,4] 
n=1 
list = list[:len(list)-n] 
print(list) 

method 2: Using negative slicing

list = [1,2,3,4] 
n=1 
list = list[:-n] 
print(list)