Lecture 1, Mon 04/03

Orientation to the course

Software you need: Windows Version

• MobaXTerm Home Edition: https://mobaxterm.mobatek.net/download-home-edition.html
• Python 3.6.5 for Windows from https://python.org
• Git for Windows: https://git-scm.com/download/win

Software you need: Mac Version

• XQuartz: https://www.xquartz.org/
• Python 3.6.5 for Mac https://python.org
  • NOTE: You may need to address the “broken Tkinter problem” which is described here: https://www.python.org/download/mac/tcltk/
• Git is likely already included with Mac OS, so you probably don’t need to download that.

Software you need: Linux Version

• X11 is probably already installed
• Upgrade your Python to 3.6.5 if it is a later version. If you running Linux, you probably know how to do that.
• Git is probably already installed.

Accounts that you need

• Activate your College of Engineering Account here: https://accounts.engr.ucsb.edu/create
  • CoE Account Briefing (short version)
• Create a github.com account on the free plan if you don’t already have one, here: http://github.com
  • If you haven’t already done it, add your ___@umail.ucsb.edu address (specifically your @umail.ucsb.edu address, not @ucsb.edu) to your github.com account, and then “verify” that email address.
  • Visit https://ucsb-cs-github-linker.herokuapp.com/, log in with your github.com account, and join the class CCS-CS20-S18.

The syllabus

The syllabus is here: https://ucsb-ccs-cs20-s18.github.io/info/syllabus/

Abstractions and Algorithms

(a review of part of the syllabus)

Abstractions and notation: three, index.

An index takes in as input a topic, and gives us back a page number.

A Point-of-Sale bar code scanner at a store checkout maps a barcode, to info about the item (description and price).

A FUNCTION in general, takes in an input (or a set of inputs) and gives us back a value.

In math, for example,

f(x) = x²

Learning Something New

• Basketball: drills vs. playing the game

• Swimming, Painting, Guitar

• Fixed vs. Growth Mindset

Python REPL (Read Eval Print Loop)

Also called the Python Shell Prompt

login as: pconrad
pconrad@csil-01.cs.ucsb.edu's password:
Last login: Mon Aug  7 15:29:19 2017 from 98.188.150.204
-bash-4.3$
-bash-4.3$ python3
Python 3.4.3 (default, Aug  9 2016, 15:36:17)
[GCC 5.3.1 20160406 (Red Hat 5.3.1-6)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 2 + 3
5
>>> 2 + 7 *4
30
>>> 2 ** 3
8
>>> 2 ** 3 ** 2
512
>>> 2 * 3 * 4
24
>>> (2 * 3) * 4
24
>>> 2 * (3 * 4)
24
>>> (2 ** 3) ** 2
64
>>> 2 ** (3 ** 2)
512
>>>

Note that ** is right associative, not left associative.

The textbook and the homework

• Look over H00, H01, H02, and show the calendar.

Accounts you need

• https://accounts.engr.ucsb.edu/create

The textbook and the homework

• Look over H00, H01, H02, and show the calendar.

IDLE and Python