Course A201: Introduction to Programming

1. Course A201:Introduction to Programming 09/09/2010

2. Lab Instructor • Linger(TianXu), second year graduate student • joint degree of Computer Science and Cognitive science • Multisensory Lab directed by Prof. Chen Yu • E-mail: txu@indiana.edu

3. Special Note! • From now on • Better for you, better for us

4. Recap • Textbook Chapter 1 to 2 • Get familiar with IDLE designed for python • Know what’s shell, what’s a script • How to print out something by using function ‘print’ • Write comments • What is the concept of ‘function’, can I write one? (more on this in the future) • When error happens, how can I deal with it?

5. Recap • See the example script -> • This week I will Email you all the example script or slides I used in labs, next I will set up a website you can access all the materials. However, I will mostly use the slides you see in the lecture to avoid redundancy

6. This week • Let’s open IDLE • Python version 2.6 installed instead of 3.1 • Add this line in the very beginning: from __future__ import print_function, division • Using input will give you an error, use raw_input instead

7. This week [functions] Ex: radius = float(raw_input(‘Radius: ’)) • This is a combination of two functions: radius = raw_input (‘Radius: ’) # radius now contains a string value radius = float(radius) # radius now contains a float value • Execute this function first

8. This week • From inside to outside [functions] Ex: radius = float(raw_input(‘Radius: ’)) • This is a combination of two functions: radius = raw_input (‘Radius: ’) # radius now contains a string value radius = float(radius) # radius now contains a float value • Then do the type conversion

9. Have a nice evening! • See you next time~