Removing Elements Using Slices in Python
Slices are very widely used in Python, including for removing specific elements. In this case, the del operator is used and the desired slice is specified next to it. Let's remove the following selection from our list:
lst = [1, 2, 3, 4, 5, 6]
del lst[1:4]
print(lst) # [1, 5, 6]
To remove all elements from the list, simply specify a step equal to one in the slice:
txt = '123456789'
del lst[::1]
print(txt) # []
However, if you want to remove characters from a string, an error will be returned. This is because strings in Python are immutable:
txt = '123456789'
del txt[1:3] # will display an error
Given a list:
lst = [1, 2, 3, 4, 5, 6]
Remove every odd element from it.
Given a list:
lst = [1, 2, 3, 4, 5, 6, 7, 8]
Write the code to get the following slice:
[8, 6, 4, 2]
