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Compsci 101Review for Exam 1
Live Lecture
9/22/2020 Compsci 101, Fall 2020 1
Susan Rodger
September 22, 2020
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K is for …• Kernel
• Core of the OS, Core for Machine Learning• Keyboard - QWERTY
or DVORAK
• DVORAK:
• Key and (Key,Value) pair• Heart of a dictionary
9/22/2020 Compsci 101, Fall 2020 2
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Announcements (all times EDT)• Exam 1 is Thursday, Sept 24!• APT
Quiz 1 is Friday Sept 25 – Monday, Sept 28
• APT-3 is due tonight!• There is a 24-hour grace period
• Assignment 2 Turtles is due Tuesday, Sept 29
• Next Videos, RQ and Textbook assignment is due Tuesday, Sept
29
9/22/2020 Compsci 101, Fall 2020 3
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Go over Google Form from last time
• File Frequencies
9/22/2020 Compsci 101, Fall 2020 4
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APT Quiz 1
• APT Quiz 1 is Friday Sept 25 – Monday, Sept 28 • 2.5 hours on
Sakai (more if accommodations)• 4 days to take, 8am Sept 25-11pm
Sept 28• Must start by 8:30pm to end by 11pm
• Talk to no one except teaching staff• All questions on Piazza
Private• We do not answer questions between 11pm
and 8am (on your own if take it then)
9/22/2020 Compsci 101, Fall 2020 5
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Starting snf z APT Quiz 1
• Start APT Quiz in Sakai Quizzes• DO NOT CLICK ON SAKAI QUIZ
UNTIL YOU ARE
READY
• TIMER STARTS WHEN YOU CLICK ON IT– Can see how much time you
have left
• It will send you to the APT Quiz page • Fill out Reflect form
for each APT Quiz
• Link to reflect form is in the Sakai quiz
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Protect your APT Quiz!
• Be defensive in both directions!• Reduce risk others will see
your code
• Complete it in your dorm room, alone• Lock the door!• Do not
do it in a public space
• Reduce risk you will see/know other’s answers• Do not ask
others about the quiz• Do the quiz alone
• Can’t ask for help if there’s no one around• If your code is
suspiciously similar to another’s, both of
you are in trouble
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Exam 1
• Exam 1 is Thursday, Sept 24!• 90 minutes (exam is 75 min, get
15 min extra)• Exam is available from 6am until 11pm• You must
start by 9:30pm, better 9:25pm• Accommodations? Must start to end
by 11pm
• Start Exam 1 on Gradescope• Don’t click on it until you are
ready!• Timer starts when you click on it• Don’t even go to
gradescope until you are ready
9/22/2020 Compsci 101, Fall 2020 8
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Taking Exam 1
• Type in your answers in answer boxes• For python code be sure
to indent• Code is NOT compiled• Answers are automatically saved•
If you get disconnected, log back in• Do not type the code
elsewhere and cut and paste
• Use Python Reference Sheet (on today’s date)• Use 4 sheets of
paper with whatever notes
• You will not have time to look for things• You won’t finish
the exam if you are looking for
things
9/22/2020 Compsci 101, Fall 2020 9
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Exam 1 Rules
• The exam is your own work. • Do not get help or talk to anyone
about the exam
until it is handed back.
• Do not use PyCharm, Python Tutor, the course textbook or any
environment that compiles code
• Do not search for answers on the internet.
9/22/2020 Compsci 101, Fall 2020 10
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How to Study
• Redo an APT – start from scratch• Do the APT Quiz 1 practice
in 2.5 hours (on the APT
page)• Go over lecture notes, Redo code from lecture, the
textbooks• CS Reviewer App and Sakai Quizzes• Old Exams• Don’t
just use one way to study!
• Practice typing code into a simple text file that does not
compile, be sure to use tabs!
9/22/2020 Compsci 101, Fall 2020 11
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Practice Question (rewritten) From Spring 2017, Problem 5A
• Write translate(phrase) function to translate a string with 4
parts (name, age, restaurant, price) into a list. Return the list
of 4 parts.• There are three separators: blank, :, $• Name and
restaurant can be multiple words
• Example1: “Bradley Atkinson 16:Sushi Love$18.30”• Into list of
four parts:• [’Bradley Atkinson’, 16, ’Sushi Love’, 18.3]
• Example2: “Gini Carlson 11:Another Broken Egg Cafe$8.64”•
Into:• [’Gini Carlson’, 11, ’Another Broken Egg Cafe’, 8.64]
9/22/2020 Compsci 101, Fall 2020 12
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Practice Question (rewritten) From Spring 2017, Problem 5
def translate(phrase):
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Do by yourself firsthttp://bit.ly/101f20-0922-1
• Think about types as you type this into a plain txt file
9/22/2020 Compsci 101, Fall 2020 14
http://bit.ly/101f20-0922-1
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Now breakout groups to share solutions
http://bit.ly/101f20-0922-2
• Think about types as you type this into a plain txt file
9/22/2020 Compsci 101, Fall 2020 15
http://bit.ly/101f20-0922-2
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Practice Question (rewritten) From Spring 2017, Problem 5
def translate(phrase):
9/22/2020 Compsci 101, Fall 2020 16
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Practice Question 2 From Spring 2017, Problem 5B
• Assume now we have a list of lists from Part A
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Practice Question 2 From Spring 2017, Problem 5B
• Write the function dinersForRestaurant that has two
parameters: one named datalist (list of lists previous page) and
restname is a restaurant.
• The function returns the unique list of names of people who
ate at restname.
def dinersForRestaurant(datalist, restname)
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Do by yourself firsthttp://bit.ly/101f20-0922-3
• Think about types as you type this into a plain txt file
9/22/2020 Compsci 101, Fall 2020 20
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Now breakout groups to share solutions
http://bit.ly/101f20-0922-4
• Think about types as you type this into a plain txt file
9/22/2020 Compsci 101, Fall 2020 21
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Practice Question 2 From Spring 2017, Problem 5B
def dinersForRestaurant(datalist, restname):
9/22/2020 Compsci 101, Fall 2020 22
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