Sampling step for slicing in Python

If we need to select elements with a certain step, then we should specify a number in the third parameter of the slice. Let's select every second character except the first and last:

pythontxt = '123456789'
res = txt[1:9:2]

print(res) # '2468'

Задание 1

Given a string:

pythontxt = '123456789'

Get a slice of all its characters at odd positions:

python'13579'

Задание 2

The following code is given:

pythontxt = '123456789'
res = txt[1:-1:2]

print(res)

Write what is output to the console.

Задание 3

Given a list:

pythonlst = ['a', 'b', 'c', 'd', 'e']

Get the following slice from it:

python['a', 'd']