input: Write a python function to generate a list of strings that describe the values of the variable i in a range.
  assert describe_range(10) == ['The value of the variable i is: 0', 'The value of the variable i is: 1', 'The value of the variable i is: 2', 'The value of the variable i is: 3', 'The value of the variable i is: 4', 'The value of the variable i is: 5', 'The value of the variable i is: 6', 'The value of the variable i is: 7', 'The value of the variable i is: 8', 'The value of the variable i is: 9']
  assert describe_range(5) == ['The value of the variable i is: 0', 'The value of the variable i is: 1', 'The value of the variable i is: 2', 'The value of the variable i is: 3', 'The value of the variable i is: 4']
  assert describe_range(0) == []
output: def describe_range(n):
      return [f'The value of the variable i is: {i}' for i in range(n)]