Lecture 3: Conditionals, basic lists, for loops
===============================================

Based on the lecture and the readings (R&S Control Flow) you should be
able to:

- Use conditionals as control flow statements
- Determine when and how to use for loops to reduce the length of code
- Understand how to index a list

Below, please find some practice problems for this topic. These
problems should be completed by hand, that is, without the use of a
computer.  (You can use ``ipython3`` to check your answers.)

1. What is the output of the code fragment below?

.. code-block:: python

  for i in range(10):
      print(i)

2. What is the value of ``result`` in the code fragment below?

.. code-block:: python

  mystery = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
  mystery2 = [i * 2 for i in mystery]
  result = mystery2[3]

3. What is the output of the code fragment below?

.. code-block:: python

  for i in range(10):
      if i // 2 == 0:
          print(i)