CSCI 1101B. Boolean Expressions
|
|
- Hilary Hicks
- 6 years ago
- Views:
Transcription
1 CSCI 1101B Boolean Expressions
2 Announcements Please respect the TAs Be respectful of their boundaries and needs Go to TA hours instead of knocking on their door Meet with TAs early (instead of the night before) Reminder: Collaboration Policy You should be able to explain any code you submit You can always refer to the Python docs or ask the teaching staff You should not blindly copy code or look at your neighbor s work (We can tell when you do this. Please don t do this.)
3 Today s Outline There s a Problem. Now What? Understand, Plan, Execute, Review Debugging Strategies Boolean Expressions Conditional Expressions
4 Part I There s a problem! Now what?
5 General Problem-Solving Approach 1. Understand the problem. 2. Make a plan. 3. Carry out the plan. 4. Review your solution. Does it work for all test cases? Can you make it better?
6 Understand the Problem Take notes, highlight key parts, talk out loud, draw/write your own understanding, ask questions. Write a procedure that asks a user for their age in years, and then prints their age in days.
7 Understand the Problem Take notes, highlight key parts, talk out loud, draw/write your own understanding, ask questions. Write a procedure that asks a user for their age in years, and then prints their age in days.
8 Make a Plan Write in pseudocode or comments (top-down). # Inside a function # TODO: Get the user s age with input() # TODO: Convert the age to be in days # TODO: Print out the new age
9 Carry Out the Plan Get more specific, solve and test sub-tasks. def print_days(): # TODO: Get the user s age with input() # TODO: Convert the age to be in days # TODO: Print out the new age
10 Carry Out the Plan Get more specific, solve and test sub-tasks. def print_days(): # TODO: Get the user s age with input() # TODO: Convert the age to be in days # > Cast to int, * 365, cast to str # TODO: Print out the new age
11 Carry Out the Plan Get more specific, solve and test sub-tasks. def print_days(): # TODO: Get the user s age with input() age = str(int(age) * 365) # TODO: Print out the new age
12 Carry Out the Plan Get more specific, solve and test sub-tasks. def print_days(): # TODO: age = get input() from user age = str(int(age) * 365) # TODO: Print out the new age
13 Carry Out the Plan Get more specific, solve and test sub-tasks. def print_days(): age = input( How old are you? ) age = str(int(age) * 365) # TODO: Print out the new age
14 Carry Out the Plan Get more specific, solve and test sub-tasks. def print_days(): age = input( How old are you? ) age = str(int(age) * 365) print( That s + age + days old. )
15 Review the Solution Does it work? Do all tests pass? Did you document your work with docstrings/comments? Good style? # TODO: what about if the user entered a negative (or zero) age? # TODO: what if the age wasn t an int?
16 Debugging Strategies Try small tests in the interactive shell Check your types, and what they re doing Check syntax - e.g., be sure to close parentheses Use print statements to show you the value of variables or expressions along the way Isolate the bug - comment out sections until you find it
17 Part II Booleans
18 The Boolean Data Type ( bool ) Sometimes we have data that isn t a number or a string. Instead, it is either True or False. This is called a bool. at_bowdoin = True hungry = False
19 Boolean Operators >>> hungry = False >>> hungry False
20 Boolean Operators: NOT >>> hungry = False >>> hungry False >>> not hungry True
21 Boolean Operators: AND x AND y will return True only if x and y are both true >>> happy = True >>> healthy = True >>> happy and healthy True
22 Boolean Operators: OR x OR y will return True if either x or y are true >>> wearing_hat = True >>> has_sandwich = False >>> wearing_hat or has_sandwich True
23 Comparisons and Equality Comparing numbers is similar to the math we know. 10 > 5 => True 10 <= 5 => False
24 Comparisons and Equality Comparing numbers is similar to the math we know. 10 > 5 => True 10 <= 5 => False 2 == 2 => True
25 Comparisons and Equality Comparing numbers is similar to the math we know. 10 > 5 => True 10 <= 5 => False 2 == 2 => True 3!= 2 => True
26 Comparisons and Equality Comparing strings is character by character and alphabetical. tiger == tiger => True (these values are identical) a < apples => True (alphabetical order) ABC!= abc => True (capitalization matters) Alan < alan => True (uppercase before lowercase)
27 Chained Comparisons 5 < 10 == False =>? 5 < 10 == True =>?
28 Chained Comparisons 5 < 10 == False => False 5 < 10 == True => False
29 Chained Comparisons 5 < 10 == False => False (5 < 10) and (10 == False) 5 < 10 == True => False (5 < 10) and (10 == True)
30 Membership ( in and not in ) in: True if it finds a variable in a given sequence. >>> good in a great example False >>> good not in a great example True
31 Credit: chatbot.com
32 Operator Precedence - Revisited Operator (all other operators we ve seen) <, >, <=, >=, ==,!=, in, not in not and or Description Arithmetic Comparisons, Equality, Membership NOT (Boolean Logic) AND (Boolean Logic) OR (Boolean Logic)
33 Part III Conditionals
34 Conditional Statements if <<condition>>: <<block>>
35 Conditional Statements if mood == happy : print( Yay! )
36 Conditional Statements if mood == happy : print( Yay! ) else: print( Sigh. )
37 Conditional Statements if mood == happy : print( Yay! ) elif mood == angry : print( Grr! ) else: print( Sigh. )
38 Conditional Statements my_money = $100 ticket_cost = $5 if my_money > ticket_cost: print( I can buy a ticket! )
39 Keywords - Overwatch Credit: Blizzard
40 Keywords - Overwatch GG EZ Credit: Blizzard
41 Keywords - Overwatch Credit: GameAddik, Blizzard
42 Keywords - Overwatch user_input = input( [Match]: )
43 Keywords - Overwatch user_input = input( [Match]: ) if gg ez in user_input:
44 Keywords - Overwatch user_input = input( [Match]: ) if gg ez in user_input: user_input = Wishing you all the best
45 Keywords - Overwatch user_input = input( [Match]: ) if gg ez in user_input: user_input = Wishing you all the best print(user_input)
46 Keywords - Overwatch user_input = input( [Match]: ) if gg ez in user_input: user_input = Wishing you all the best print(user_input)
47 Nested If Statements Conditional blocks can be nested. (You can place an if statement inside another if statement.)
48 Nested If Statements if some_condition: # do something
49 Nested If Statements if some_condition: # do something else: # do something else
50 Nested If Statements if some_condition: else: # do something else
51 Nested If Statements if some_condition: if some_other_condition: # do something else: # do something else else: # do something else
52 Nested If Statements Example: Character interactions in a video game (like voice lines) Credit: Dragonrage on Stack Exchange
53 Nested If Statements Veigar is a tiny master of evil. Tristana likes to taunt Veigar. Credit: Riot Games
54 Nested If Statements if near_veigar Credit: GiantBomb
55 Nested If Statements if near_veigar and taunt_pressed:
56 Nested If Statements if near_veigar and taunt_pressed: if champion == Tristana :
57 Nested If Statements if near_veigar and taunt_pressed: if champion == Tristana : print("aw, Veigar! You're cute when you're angry.")
58 Nested If Statements if near_veigar and taunt_pressed: if champion == Tristana : print("aw, Veigar! You're cute when you're angry.") else:
59 Nested If Statements if near_veigar and taunt_pressed: if champion == Tristana : print("aw, Veigar! You're cute when you're angry.") else: print( Get out of my way! )
60 Nested If Statements if near_veigar and taunt_pressed: if champion == Tristana : print("aw, Veigar! You're cute when you're angry.") else: print( Get out of my way! )
61 A New Debugging Strategy Define one or more functions that will test your code def test(): if get_last_name( Jane Smith ) is Smith : print("get_last_name works for Jane Smith ) else: print("get_last_name fails for Jane Smith ) #(etc.)
62 Lazy Evaluation Python doesn t evaluate more than it needs to
63 Lazy Evaluation Python doesn t evaluate more than it needs to hungry = True thirsty = False
64 Lazy Evaluation Python doesn t evaluate more than it needs to hungry = True thirsty = False if thirsty and hungry... # never evaluates hungry
65 Lazy Evaluation Python doesn t evaluate more than it needs to hungry = True thirsty = False if thirsty and hungry... # never evaluates hungry if hungry or thirsty... # never evaluates thirsty
66 Summary & Next Steps Remember to: Understand, Plan, Execute, Review. The bool data type is associated with True/False values. Boolean operators (and, or, not) help us specify logical conditions. Comparisons also help us make decisions. Conditional statements let us specify what to do (e.g.) if x happens, else if y happens, else z. Keep working on Lab 2 and Project 1
Text Input and Conditionals
Text Input and Conditionals Text Input Many programs allow the user to enter information, like a username and password. Python makes taking input from the user seamless with a single line of code: input()
More informationCS 115 Lecture 8. Selection: the if statement. Neil Moore
CS 115 Lecture 8 Selection: the if statement Neil Moore Department of Computer Science University of Kentucky Lexington, Kentucky 40506 neil@cs.uky.edu 24 September 2015 Selection Sometime we want to execute
More informationDecisions, Decisions. Testing, testing C H A P T E R 7
C H A P T E R 7 In the first few chapters, we saw some of the basic building blocks of a program. We can now make a program with input, processing, and output. We can even make our input and output a little
More informationCS1 Lecture 3 Jan. 22, 2018
CS1 Lecture 3 Jan. 22, 2018 Office hours for me and for TAs have been posted, locations will change check class website regularly First homework available, due Mon., 9:00am. Discussion sections tomorrow
More informationLecture 2: Variables & Assignments
http://www.cs.cornell.edu/courses/cs1110/2018sp Lecture 2: Variables & Assignments (Sections 2.1-2.3,2.5) CS 1110 Introduction to Computing Using Python [E. Andersen, A. Bracy, D. Gries, L. Lee, S. Marschner,
More informationIntro to Programming. Unit 7. What is Programming? What is Programming? Intro to Programming
Intro to Programming Unit 7 Intro to Programming 1 What is Programming? 1. Programming Languages 2. Markup vs. Programming 1. Introduction 2. Print Statement 3. Strings 4. Types and Values 5. Math Externals
More informationSAMS Programming A/B. Lecture #1 Introductions July 3, Mark Stehlik
SAMS Programming A/B Lecture #1 Introductions July 3, 2017 Mark Stehlik Outline for Today Overview of Course A Python intro to be continued in lab on Wednesday (group A) and Thursday (group B) 7/3/2017
More informationCMSC 201 Fall 2018 Lab 04 While Loops
CMSC 201 Fall 2018 Lab 04 While Loops Assignment: Lab 04 While Loops Due Date: During discussion, September 24 th through September 27 th Value: 10 points (8 points during lab, 2 points for Pre Lab quiz)
More informationCS1 Lecture 3 Jan. 18, 2019
CS1 Lecture 3 Jan. 18, 2019 Office hours for Prof. Cremer and for TAs have been posted. Locations will change check class website regularly First homework assignment will be available Monday evening, due
More informationGetting Started with Python
Fundamentals of Programming (Python) Getting Started with Python Sina Sajadmanesh Sharif University of Technology Some slides have been adapted from Python Programming: An Introduction to Computer Science
More informationPupil Name. Year. Teacher. Target Level. Key Stage 3 Self-Assessment Year 9 Python. Spelling Test No 3. Spelling Test No 2. Spelling Test No 1
Pupil Name Year Teacher Target Level Spelling Test No 1 Spelling Test No 2 Spelling Test No 3 1) 2) 3) 4) 5) 1) 2) 3) 4) 5) 1) 2) 3) 4) 5) Spelling Test No 4 Spelling Test No 5 Spelling Test No 6 1) 2)
More informationSTATS 507 Data Analysis in Python. Lecture 2: Functions, Conditionals, Recursion and Iteration
STATS 507 Data Analysis in Python Lecture 2: Functions, Conditionals, Recursion and Iteration Functions in Python We ve already seen examples of functions: e.g., type()and print() Function calls take the
More informationSSEA Computer Science: Track A. Dr. Cynthia Lee Lecturer in Computer Science Stanford
SSEA Computer Science: Track A Dr. Cynthia Lee Lecturer in Computer Science Stanford Topics for today Introduce Java programming language Assignment and type casting Expressions Operator precedence Code
More informationCMSC 201 Computer Science I for Majors
CMSC 201 Computer Science I for Majors Lecture 02 Intro to Python Syllabus Last Class We Covered Grading scheme Academic Integrity Policy (Collaboration Policy) Getting Help Office hours Programming Mindset
More informationProgram Planning, Data Comparisons, Strings
Program Planning, Data Comparisons, Strings Program Planning Data Comparisons Strings Reading for this class: Dawson, Chapter 3 (p. 80 to end) and 4 Program Planning When you write your first programs,
More informationConditional Expressions and Decision Statements
Conditional Expressions and Decision Statements June 1, 2015 Brian A. Malloy Slide 1 of 23 1. We have introduced 5 operators for addition, subtraction, multiplication, division, and exponentiation: +,
More informationFundamentals of Programming (Python) Getting Started with Programming
Fundamentals of Programming (Python) Getting Started with Programming Ali Taheri Sharif University of Technology Some slides have been adapted from Python Programming: An Introduction to Computer Science
More informationENGR 101 Engineering Design Workshop
ENGR 101 Engineering Design Workshop Lecture 2: Variables, Statements/Expressions, if-else Edgardo Molina City College of New York Literals, Variables, Data Types, Statements and Expressions Python as
More informationPython for Non-programmers
Python for Non-programmers A Gentle Introduction 1 Yann Tambouret Scientific Computing and Visualization Information Services & Technology Boston University 111 Cummington St. yannpaul@bu.edu Winter 2013
More informationControl Flow. COMS W1007 Introduction to Computer Science. Christopher Conway 3 June 2003
Control Flow COMS W1007 Introduction to Computer Science Christopher Conway 3 June 2003 Overflow from Last Time: Why Types? Assembly code is typeless. You can take any 32 bits in memory, say this is an
More informationLecture 1. Types, Expressions, & Variables
Lecture 1 Types, Expressions, & Variables About Your Instructor Director: GDIAC Game Design Initiative at Cornell Teach game design (and CS 1110 in fall) 8/29/13 Overview, Types & Expressions 2 Helping
More informationIntro. Scheme Basics. scm> 5 5. scm>
Intro Let s take some time to talk about LISP. It stands for LISt Processing a way of coding using only lists! It sounds pretty radical, and it is. There are lots of cool things to know about LISP; if
More informationCISC-124. Casting. // this would fail because we can t assign a double value to an int // variable
CISC-124 20180122 Today we looked at casting, conditionals and loops. Casting Casting is a simple method for converting one type of number to another, when the original type cannot be simply assigned to
More informationPython Boot Camp. Day 3
Python Boot Camp Day 3 Agenda 1. Review Day 2 Exercises 2.Getting input from the user, Interview Lab 3.Scopes 4.Conditionals, Mood Ring Lab 5.Recursion, Recursion Lab Day 2 Exercises Think Python Ch. 3
More informationBasic Data Types and Operators CS 8: Introduction to Computer Science, Winter 2019 Lecture #2
Basic Data Types and Operators CS 8: Introduction to Computer Science, Winter 2019 Lecture #2 Ziad Matni, Ph.D. Dept. of Computer Science, UCSB Your Instructor Your instructor: Ziad Matni, Ph.D(zee-ahd
More informationCS 115 Lecture 4. More Python; testing software. Neil Moore
CS 115 Lecture 4 More Python; testing software Neil Moore Department of Computer Science University of Kentucky Lexington, Kentucky 40506 neil@cs.uky.edu 8 September 2015 Syntax: Statements A statement
More informationHello World! Computer Programming for Kids and Other Beginners. Chapter 1. by Warren Sande and Carter Sande. Copyright 2009 Manning Publications
Hello World! Computer Programming for Kids and Other Beginners by Warren Sande and Carter Sande Chapter 1 Copyright 2009 Manning Publications brief contents Preface xiii Acknowledgments xix About this
More informationFlow Control: Branches and loops
Flow Control: Branches and loops In this context flow control refers to controlling the flow of the execution of your program that is, which instructions will get carried out and in what order. In the
More informationLecture 2. Variables & Assignment
Lecture 2 Variables & Assignment Announcements for Today If Not Done Already Enroll in Piazza Sign into CMS Fill out the Survey Complete AI Quiz Read the tetbook Chapter 1 (browse) Chapter 2 (in detail)
More informationAccelerating Information Technology Innovation
Accelerating Information Technology Innovation http://aiti.mit.edu/program/philippines-summer-2012/ Philippines Summer 2012 Lecture 1 Introduction to Python June 19, 2012 Agenda About the Course What is
More informationCS 1803 Pair Homework 3 Calculator Pair Fun Due: Wednesday, September 15th, before 6 PM Out of 100 points
CS 1803 Pair Homework 3 Calculator Pair Fun Due: Wednesday, September 15th, before 6 PM Out of 100 points Files to submit: 1. HW3.py This is a PAIR PROGRAMMING Assignment: Work with your partner! For pair
More informationUnit E Step-by-Step: Programming with Python
Unit E Step-by-Step: Programming with Python Computer Concepts 2016 ENHANCED EDITION 1 Unit Contents Section A: Hello World! Python Style Section B: The Wacky Word Game Section C: Build Your Own Calculator
More informationPREPARING FOR PRELIM 1
PREPARING FOR PRELIM 1 CS 1110: FALL 2012 This handout explains what you have to know for the first prelim. There will be a review session with detailed examples to help you study. To prepare for the prelim,
More informationDiscussion 1H Notes (Week 3, April 14) TA: Brian Choi Section Webpage:
Discussion 1H Notes (Week 3, April 14) TA: Brian Choi (schoi@cs.ucla.edu) Section Webpage: http://www.cs.ucla.edu/~schoi/cs31 More on Arithmetic Expressions The following two are equivalent:! x = x + 5;
More informationIntroduction to Python (All the Basic Stuff)
Introduction to Python (All the Basic Stuff) 1 Learning Objectives Python program development Command line, IDEs, file editing Language fundamentals Types & variables Expressions I/O Control flow Functions
More informationFlow Control. So Far: Writing simple statements that get executed one after another.
Flow Control So Far: Writing simple statements that get executed one after another. Flow Control So Far: Writing simple statements that get executed one after another. Flow control allows the programmer
More informationPython Day 3 11/28/16
Python Day 3 11/28/16 Objectives Review Concepts Types of Errors Escape sequences String functions Find the Errors bookcost = int(input("how much is the book: ")) discount = float(input("what is the discount:
More informationMIT AITI Python Software Development
MIT AITI Python Software Development PYTHON L02: In this lab we practice all that we have learned on variables (lack of types), naming conventions, numeric types and coercion, strings, booleans, operator
More informationGetting Started. Office Hours. CSE 231, Rich Enbody. After class By appointment send an . Michigan State University CSE 231, Fall 2013
CSE 231, Rich Enbody Office Hours After class By appointment send an email 2 1 Project 1 Python arithmetic Do with pencil, paper and calculator first Idle Handin Help room 3 What is a Computer Program?
More informationPython The way of a program. Srinidhi H Asst Professor Dept of CSE, MSRIT
Python The way of a program Srinidhi H Asst Professor Dept of CSE, MSRIT 1 Problem Solving Problem solving means the ability to formulate problems, think creatively about solutions, and express a solution
More informationRETURN X return X Returning a value from within a function: computes the value of variable exits the function and returns the value of the variable
STUDENT TEACHER CLASS WORKING AT GRADE TERM TARGET YEAR TARGET Pseudocode Python Description BEGIN END Identifies the start of a program Identifies the end of a program READ X, Y, Z input() Identifies
More informationObjectives. Chapter 4: Control Structures I (Selection) Objectives (cont d.) Control Structures. Control Structures (cont d.) Relational Operators
Objectives Chapter 4: Control Structures I (Selection) In this chapter, you will: Learn about control structures Examine relational and logical operators Explore how to form and evaluate logical (Boolean)
More informationCIS192: Python Programming
CIS192: Python Programming Introduction Harry Smith University of Pennsylvania January 18, 2017 Harry Smith (University of Pennsylvania) CIS 192 Lecture 1 January 18, 2017 1 / 34 Outline 1 Logistics Rooms
More informationCMSC 201 Spring 2019 Lab 06 Lists
CMSC 201 Spring 2019 Lab 06 Lists Assignment: Lab 06 Lists Due Date: Thursday, March 7th by 11:59:59 PM Value: 10 points This week s lab will put into practice the concepts you learned about lists: indexing,
More informationThe design recipe. Readings: HtDP, sections 1-5. (ordering of topics is different in lectures, different examples will be used)
The design recipe Readings: HtDP, sections 1-5 (ordering of topics is different in lectures, different examples will be used) Survival and Style Guides CS 135 Winter 2018 02: The design recipe 1 Programs
More informationPart III Appendices 165
Part III Appendices 165 Appendix A Technical Instructions Learning Outcomes This material will help you learn how to use the software you need to do your work in this course. You won t be tested on it.
More informationObject-Oriented Programming
Object-Oriented Programming Java Syntax Program Structure Variables and basic data types. Industry standard naming conventions. Java syntax and coding conventions If Then Else Case statements Looping (for,
More informationCS 115 Data Types and Arithmetic; Testing. Taken from notes by Dr. Neil Moore
CS 115 Data Types and Arithmetic; Testing Taken from notes by Dr. Neil Moore Statements A statement is the smallest unit of code that can be executed on its own. So far we ve seen simple statements: Assignment:
More informationCOMP1730/COMP6730 Programming for Scientists. Testing and Debugging.
COMP1730/COMP6730 Programming for Scientists Testing and Debugging. Overview * Testing * Debugging * Defensive Programming Overview of testing * There are many different types of testing - load testing,
More informationGetting started: 1. Join the wifi network Network: Password:
Let s Learn Python! Getting started: 1. Join the wifi network Network: Password: 2. Get Python installed 3. Start the Python interactive shell 4. Get ready to have fun! Find these slides here: http://www.meetup.com/pyladies-atx/files/
More informationChapter 4: Control Structures I (Selection) Objectives. Objectives (cont d.) Control Structures. Control Structures (cont d.
Chapter 4: Control Structures I (Selection) In this chapter, you will: Objectives Learn about control structures Examine relational and logical operators Explore how to form and evaluate logical (Boolean)
More informationModule 3: New types of data
Module 3: New types of data Readings: Sections 4 and 5 of HtDP. A Racket program applies functions to values to compute new values. These new values may in turn be supplied as arguments to other functions.
More informationWELCOME! (download slides and.py files and follow along!) LECTURE 1
WELCOME! (download slides and.py files and follow along!) 6.0001 LECTURE 1 6.0001 LECTURE 1 1 TODAY course info what is computation python basics mathematical operations python variables and types NOTE:
More informationcs1114 REVIEW of details test closed laptop period
python details DOES NOT COVER FUNCTIONS!!! This is a sample of some of the things that you are responsible for do not believe that if you know only the things on this test that they will get an A on any
More informationEx: If you use a program to record sales, you will want to remember data:
Data Variables Programs need to remember values. Ex: If you use a program to record sales, you will want to remember data: A loaf of bread was sold to Sione Latu on 14/02/19 for T$1.00. Customer Name:
More informationComp 151. Control structures.
Comp 151 Control structures. admin quiz this week believe it or not only 2 weeks from exam. one a week each week after that. idle debugger Debugger: program that will let you look at the program as it
More informationLecture 27. Lecture 27: Regular Expressions and Python Identifiers
Lecture 27 Lecture 27: Regular Expressions and Python Identifiers Python Syntax Python syntax makes very few restrictions on the ways that we can name our variables, functions, and classes. Variables names
More informationAn Introduction to Python
An Introduction to Python Day 2 Renaud Dessalles dessalles@ucla.edu Python s Data Structures - Lists * Lists can store lots of information. * The data doesn t have to all be the same type! (unlike many
More informationage = 23 age = age + 1 data types Integers Floating-point numbers Strings Booleans loosely typed age = In my 20s
Intro to Python Python Getting increasingly more common Designed to have intuitive and lightweight syntax In this class, we will be using Python 3.x Python 2.x is still very popular, and the differences
More informationCMSC201 Computer Science I for Majors
CMSC201 Computer Science I for Majors Lecture 08 Lists Constants Last Class We Covered More on while loops Sentinel loops Priming Reads Boolean flags 2 Any Questions from Last Time? 3 Today s Objectives
More informationGetting Started. Excerpted from Hello World! Computer Programming for Kids and Other Beginners
Getting Started Excerpted from Hello World! Computer Programming for Kids and Other Beginners EARLY ACCESS EDITION Warren D. Sande and Carter Sande MEAP Release: May 2008 Softbound print: November 2008
More informationCS Boolean Statements and Decision Structures. Week 6
CS 17700 Boolean Statements and Decision Structures Week 6 1 Announcements Midterm 1 is on Feb 19 th, 8:00-9:00 PM in PHYS 114 and PHYS 112 Let us know in advance about conflicts or other valid makeup
More informationLecture 4 8/24/18. Expressing Procedural Knowledge. Procedural Knowledge. What are we going to cover today? Computational Constructs
What are we going to cover today? Lecture 4 Conditionals and Boolean Expressions What is procedural knowledge? Boolean expressions The if-else and if-elif-else statements s Procedural Knowledge We differentiate
More informationTry typing the following in the Python shell and press return after each calculation. Write the answer the program displays next to the sums below.
Name: Date: Instructions: PYTHON - INTRODUCTORY TASKS Open Idle (the program we will be using to write our Python codes). We can use the following code in Python to work out numeracy calculations. Try
More informationProblem Solving for Intro to Computer Science
Problem Solving for Intro to Computer Science The purpose of this document is to review some principles for problem solving that are relevant to Intro to Computer Science course. Introduction: A Sample
More informationDiscussion 1H Notes (Week 2, 4/8) TA: Brian Choi Section Webpage:
Discussion 1H Notes (Week 2, 4/8) TA: Brian Choi (schoi@cs.ucla.edu) Section Webpage: http://www.cs.ucla.edu/~schoi/cs31 Variables You have to instruct your computer every little thing it needs to do even
More informationCMSC201 Computer Science I for Majors
CMSC201 Computer Science I for Majors Lecture 08 Lists Constants Last Class We Covered More on while loops Sentinel loops Boolean flags 2 Any Questions from Last Time? 3 Today s Objectives To learn about
More informationDEBUGGING TIPS. 1 Introduction COMPUTER SCIENCE 61A
DEBUGGING TIPS COMPUTER SCIENCE 61A 1 Introduction Every time a function is called, Python creates what is called a stack frame for that specific function to hold local variables and other information.
More informationSTUDENT OUTLINE. Lesson 8: Structured Programming, Control Structures, if-else Statements, Pseudocode
STUDENT OUTLINE Lesson 8: Structured Programming, Control Structures, if- Statements, Pseudocode INTRODUCTION: This lesson is the first of four covering the standard control structures of a high-level
More informationCS 112 Introduction to Computing II. Wayne Snyder Computer Science Department Boston University
CS 112 Introduction to Computing II Wayne Snyder Department Boston University Today: Java basics: Compilation vs Interpretation Program structure Statements Values Variables Types Operators and Expressions
More informationIntroduction to Python
May 25, 2010 Basic Operators Logicals Types Tuples, Lists, & Dictionaries and or Building Functions Labs From a non-lab computer visit: http://www.csuglab.cornell.edu/userinfo Running your own python setup,
More informationCSE 115. Introduction to Computer Science I
CSE 115 Introduction to Computer Science I Note about posted slides The slides we post will sometimes contain additional slides/content, beyond what was presented in any one lecture. We do this so the
More informationCS1 Lecture 5 Jan. 25, 2019
CS1 Lecture 5 Jan. 25, 2019 HW1 due Monday, 9:00am. Notes: Do not write all the code at once before starting to test. Take tiny steps. Write a few lines test... add a line or two test... add another line
More informationComp 151. Control structures.
Comp 151 Control structures. admin For these slides read chapter 7 Yes out of order. Simple Decisions So far, we ve viewed programs as sequences of instructions that are followed one after the other. While
More informationEECS 183. Week 3 - Diana Gage. www-personal.umich.edu/ ~drgage
EECS 183 Week 3 - Diana Gage www-personal.umich.edu/ ~drgage Upcoming Deadlines Lab 3 and Assignment 3 due October 2 nd (this Friday) Project 2 will be due October 6 th (a week from Friday) Get started
More informationVariables, expressions and statements
Variables, expressions and statements 2.1. Values and data types A value is one of the fundamental things like a letter or a number that a program manipulates. The values we have seen so far are 2 (the
More information9/5/2018. Overview. The C Programming Language. Transitioning to C from Python. Why C? Hello, world! Programming in C
Overview The C Programming Language (with material from Dr. Bin Ren, William & Mary Computer Science) Motivation Hello, world! Basic Data Types Variables Arithmetic Operators Relational Operators Assignments
More informationIntroduction to Computation for the Humanities and Social Sciences. CS 3 Chris Tanner
Introduction to Computation for the Humanities and Social Sciences CS 3 Chris Tanner Lecture 4 Python: Variables, Operators, and Casting Lecture 4 [People] need to learn code, man I m sick with the Python.
More informationSimple Java Programming Constructs 4
Simple Java Programming Constructs 4 Course Map In this module you will learn the basic Java programming constructs, the if and while statements. Introduction Computer Principles and Components Software
More informationThe C Programming Language. (with material from Dr. Bin Ren, William & Mary Computer Science)
The C Programming Language (with material from Dr. Bin Ren, William & Mary Computer Science) 1 Overview Motivation Hello, world! Basic Data Types Variables Arithmetic Operators Relational Operators Assignments
More informationAccounts and Passwords
Accounts and Passwords Hello, I m Kate and we re here to learn how to set up an account on a website. Many websites allow you to create a personal account. Your account will have its own username and password.
More informationCMSC201 Computer Science I for Majors
CMSC201 Computer Science I for Majors Lecture 05 Algorithmic Thinking Last Class We Covered Decision structures One-way (using if) Two-way (using if and else) Multi-way (using if, elif, and else) Nested
More informationCSCI 161 Introduction to Computer Science
CSCI 161 Introduction to Computer Science Department of Mathematics and Computer Science Lecture 2b A First Look at Class Design Last Time... We saw: How fields (instance variables) are declared How methods
More informationControl Structures 1 / 17
Control Structures 1 / 17 Structured Programming Any algorithm can be expressed by: Sequence - one statement after another Selection - conditional execution (not conditional jumping) Repetition - loops
More information1.1 Defining Functions
1.1 Defining Functions Functions govern many interactions in our society today. Whether buying a cup of coffee at the local coffee shop or playing a video game, we are using a function in some fashion.
More informationMITOCW watch?v=0jljzrnhwoi
MITOCW watch?v=0jljzrnhwoi The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high quality educational resources for free. To
More information6.189 Project 1. Readings. What to hand in. Project 1: The Game of Hangman. Get caught up on all the readings from this week!
6.189 Project 1 Readings Get caught up on all the readings from this week! What to hand in Print out your hangman code and turn it in Monday, Jaunary 10 at 2:10 PM. Be sure to write your name and section
More information1.00/1.001 Tutorial 1
1.00/1.001 Tutorial 1 Introduction to 1.00 September 12 & 13, 2005 Outline Introductions Administrative Stuff Java Basics Eclipse practice PS1 practice Introductions Me Course TA You Name, nickname, major,
More informationPython Unit
Python Unit 1 1.1 1.3 1.1: OPERATORS, EXPRESSIONS, AND VARIABLES 1.2: STRINGS, FUNCTIONS, CASE SENSITIVITY, ETC. 1.3: OUR FIRST TEXT- BASED GAME Python Section 1 Text Book for Python Module Invent Your
More informationNESTED IF STATEMENTS AND STRING/INTEGER CONVERSION
LESSON 15 NESTED IF STATEMENTS AND STRING/INTEGER CONVERSION OBJECTIVE Learn to work with multiple criteria if statements in decision making programs as well as how to specify strings versus integers in
More informationComputer Components. Software{ User Programs. Operating System. Hardware
Computer Components Software{ User Programs Operating System Hardware What are Programs? Programs provide instructions for computers Similar to giving directions to a person who is trying to get from point
More informationCMSC 201 Spring 2018
CMSC 201 Spring 2018 Name Midterm Review Worksheet This worksheet is NOT guaranteed to cover every topic you might see on the exam. It is provided to you as a courtesy, as additional practice problems
More informationTOPIC 2 INTRODUCTION TO JAVA AND DR JAVA
1 TOPIC 2 INTRODUCTION TO JAVA AND DR JAVA Notes adapted from Introduction to Computing and Programming with Java: A Multimedia Approach by M. Guzdial and B. Ericson, and instructor materials prepared
More informationCMSC 201 Spring 2017 Lab 05 Lists
CMSC 201 Spring 2017 Lab 05 Lists Assignment: Lab 05 Lists Due Date: During discussion, February 27th through March 2nd Value: 10 points (8 points during lab, 2 points for Pre Lab quiz) This week s lab
More information\n is used in a string to indicate the newline character. An expression produces data. The simplest expression
Chapter 1 Summary Comments are indicated by a hash sign # (also known as the pound or number sign). Text to the right of the hash sign is ignored. (But, hash loses its special meaning if it is part of
More informationPRG PROGRAMMING ESSENTIALS. Lecture 2 Program flow, Conditionals, Loops
PRG PROGRAMMING ESSENTIALS 1 Lecture 2 Program flow, Conditionals, Loops https://cw.fel.cvut.cz/wiki/courses/be5b33prg/start Michal Reinštein Czech Technical University in Prague, Faculty of Electrical
More informationLecture 7. Memory in Python
Lecture 7 Memory in Python Announcements For This Lecture Readings Reread Chapter 3 No reading for Thursday Lab Work on Assignment Credit when submit A Nothing else to do Assignment Moved to Fri, Sep.
More informationRepetitive Program Execution
Repetitive Program Execution Quick Start Compile step once always mkdir labs javac Vowel3java cd labs mkdir 3 Execute step cd 3 java Vowel3 cp /samples/csc/156/labs/3/* Submit step emacs Vowel3java & submit
More informationT H E I N T E R A C T I V E S H E L L
3 T H E I N T E R A C T I V E S H E L L The Analytical Engine has no pretensions whatever to originate anything. It can do whatever we know how to order it to perform. Ada Lovelace, October 1842 Before
More informationCS115 - Module 3 - Booleans, Conditionals, and Symbols
Fall 2017 Reminder: if you have not already, ensure you: Read How to Design Programs, sections 4-5 Booleans (Bool) , and = are new functions, each of which produces a boolean value (Bool). (< 4 6)
More information