#26 Python del() and pop()

Use del and specify the element you want to delete with the index:
```py
 a = range(10)
 a      # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
 del a[-1]
 a      # [0, 1, 2, 3, 4, 5, 6, 7, 8]
```
```py
a = ['a', 'b', 'c', 'd']
a.pop(1)
# now a is ['a', 'c', 'd']
```