Lesson overview =============== This week we will focus on repeating tasks and making decisions in Python. Both of these concepts are part of the larger computing idea called *control flow*, which refers to how the execution of different parts of a computer program is determined. We will learn how to alter the execution of our notebooks using (1) *loops*, which are used to repeat execution of parts of a program, and (2) *conditional statements*, which use basic logical tests to determine which parts of a program will be run. The main components of today's lesson can be found in the navigation bar to the left. Learning goals -------------- After this weeks lesson your should be able to: - Create a ``for`` loop and use it to repeat a section of code - Use ``if``, ``elif``, and ``else`` statements to make decisions in your programs - Explain how values can be compared using comparison operators Lesson videos ------------- .. admonition:: Lesson 3.1 - Repeating tasks with loops :class: admonition-youtube .. youtube:: SSoEpgKAvl8 Dave Whipp & Kamyar Hasanzadeh, University of Helsinki @ `Geo-Python channel on Youtube `_. .. admonition:: Lesson 3.2 - Conditional statements :class: admonition-youtube .. youtube:: yyE26GU5wLk Dave Whipp & Kamyar Hasanzadeh, University of Helsinki @ `Geo-Python channel on Youtube `_.