CSC 111 Introduction to Computer Science - Clark …€¦ · · 2015-09-11mith College C omputer...

mith College

Computer Science

Dominique Thiébaut dthiebaut@smith.edu

CSC 111 Introduction to

Computer ScienceDominique Thiebaut

Fall 2015

D. Thiebaut, Computer Science, Smith College

Today:• Class Web Page: http://tinyurl.com/

1112015

• Syllabus

• Piazza

• Moodle

• Python & Idle

• Waiver forms & Registration

Syllabus • http://tinyurl.com/111-F2015

• http://cs.smith.edu

• faculty

• D. Thiebaut

• more info

Fall 2015

Please answer the Survey!

CSC111: Amount of Work

Semester

l of D

ifficu

CSC111: Amount of Work

Semester

l of D

ifficu

Your level

This week…

Semester

l of D

ifficu

Your level

Goals for this Week• Learn the Rules for Pair Programming

• Learn how to use Idle

• Write simple programs that use variables, for loops, and output information

• Install Python and Idle on laptop (optional)

• Learn how to submit Python programs to Moodle (lab+homework)

Rule for Laptop Use in Class

• Laptops welcome for note-taking, accessing class Web page, and for running Python programs

• All other use is forbidden

Reading

• Read Chapter 1 in John Zelle's Python Programming, up to Section 1.7 included

What is a Programming

language?

Important Concepts…

• Syntax and keywords and del from not while as elif global or with assert else if pass yield break except import print class exec in raise continue finally is return def for lambda try

• Algorithm

Rules for Pair Programming

https://www.youtube.com/watch?v=vgkahOzFH2Q

An Example Program

COMMENT

DIFFERENT COLORS:SYNTAX HIGHLIGHTING

INDENTATIONIS

IMPORTANT

SPECIAL TOOL:EDITOR

Integrated Development = IDLE Environment

Integrated Development Environment

(Windows)

DEMO TIME!

Registration Update

Concepts to Cover in Demo

• Console vs. Edit window

• Variables

• numbers: integers and floats

• text: strings of characters

• print function

Demo Programs To Play With…

for name in [ "Lea Jones", "Julie Fleur", "Anu Vias" ]: print( name ) print( "———————" )

age = 20 year = 2015 yearBorn = year - age print( "you are", age ) print( "you were born in", yearBorn )

name = "Alex" college = "Smith College" print( name, "goes to", college )

Demo Programs To Play With… (cont’d)

for name in [ "Lea Jones", "Julie Fleur", "Anu Vias" ]: print( name, len( name ) )

print( "hello" * 4 ) print( "-" * 10 ) greetings = “hello” dash = "-" print( greetings * 4 ) print( dash * 10 )

greetings = "hello" longGreetings = greeting * 4 print( greetings ) print( longGreetings )

Demo Programs To Play With… (cont’d)

for name in [ "Lea Jones", "Julie Fleur", "Anu Vias" ]: bar = len( name ) * "-" print( name ) print( bar )

print( "hello" * 4 ) print( "-" * 10 )

greetings = “hello” dash = "-" print( greetings * 4 ) print( dash * 10 )

greetings = "hello" longGreetings = greeting * 4 print( greetings ) print( longGreetings )

We stopped here last time…

Registering Wait-Listed Students

• Status as of 1/28/15 (R=registered, NS=needs signature, WL=wait-listed)

• Lab 01: W 1-3: 21 R + 2 WL

• Lab 02: Th 1-3: 24 R + 1 WL (?)

• Lab 03: Th 3-5: 24 R + 4 WL

• Lab 04: W 3-5: 16 R + 0 WL

Registration Update

• 3 slots left

• Should be able to absorb wait-listed students

• No section transfer between Labs 1, 2, 3, or 4 unless you find somebody to transfer the other way

• Some seats left in Section 4 (Wed 1-3)

Plan Review of the lab

Introduction to Homework #1

def block

Something fun…

Lab 1 Q&A

Understanding Moodle's Comments (1)

Line 1Line 2Line 3Line 4

Expected Output

Expected OutputLine 1Line 2Line 3Line 4

Your Program Output

Expected OutputLine 1Line 2Line 3Line 4

Your Program Output

Expected Output

Expected OutputLine 1Lines 20Line 3Line 4

Your Program Output

Expected OutputLine 1Lines 20Line 3Line 4

Your Program Output

Line 1 - Lines 20 ? - - + Line 2 Line 3 Line 4

Expected Output

Line 1Line 3Line 4

Your Program Output

Expected Output

Line 1Line 3Line 4

Your Program Output

Line 1 + Line 2 Line 3 Line 4

Expected Output

Expected OutputLine 1Line 2Extra LineLine 3Line 4

Your Program Output

Expected Output Your Program Output

It will depends!

Line 1Line 2Extra LineLine 3Line 4

Practice Python!

Beginningof the

Semester

AFTERONE SEMESTER

Computer Science

Memory

Variables

age age = 23

Variables

age = 23age23

assignment

Variables

“Smith”

name = “Smith”“Smith”

assignment

Variables

rate = 21.3421.34

assignment

Variables & Expressions

newValue10

age = 23 newValue = 10

newValue10

age = 23 newValue = 10 age = newValue

age23 10

newValue10

age = 23 newValue = 10 age = newValue

newValue10

age = 23 newValue = 10 age = newValue age = age + 2

newValue10

10+2 —> 12

age10 12

newValue10

10+2 —> 12

Exercisea = 10 b = 20 c = 30

a = b # a = ?

Exercisea = 10 b = 20 c = 30

a = b # a = 20 b = a # a = ? b = ?

Exercisea = 10 b = 20 c = 30

a = b # a = 20 b = a # a = 20 b = 20 c = c * 2 # c = ?

Exercisea = 10 b = 20 c = 30

a = b # a = 20 b = a # a = 20 b = 20 c = c * 2 # c = 60 d = d - 10 # d = ?

Exercisea = 10 b = 20 c = 30

a = b # a = 20 b = a # a = 20 b = 20 c = c * 2 # c = 60 d = d - 10 # NameError: # name 'd' is not defined

Naming Variables

a age delta name1 name2 R2D2 aVeryLongName

1tooMany

Naming Variables

a age delta name1 name2 R2D2 aVeryLongName

1tooMany

Naming Variables

this_is_good_too but wePrefer thisIsGoodToo

lambda for def

Exercise 1

***Mae*****Alice*******Felicia

Exercise 2

*Mae********Alice****Felicia**

CSC 111 Introduction to Computer Science - Clark …€¦ · · 2015-09-11mith College C omputer...

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