Computer Science 217 – Introduction to Python

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Computer Science (CPSC 217-UCAL) Final Exam

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Question 1

To print the statement "That is not a valid divisional operation.", the user could enter what value for the prompt? (ID-CPF-47)

A	5
B	-1
C	1
D	0
E	9999

Question 2

Why do we use exceptions in advanced Python 3 programs? (ID-CPF-26)

A	To print out a meaningful error messages.
B	To crash the program in an event the output is invalid.
C	To limit errors.
D	To quite a program in an event the output is invalid. Hint: No, you are confused with INPUT is invalid. This answer reads OUTPUT, hence it is wrong.

Question 3

Select all the valid dictionary names. (ID-CPF-14)

A	my Dictionary
B	my1988
C	haha
D	myDic
E	c _b999

Question 4

Dictionary key index number must always increase by one (and exactly one only) integer value. (ID-CPF-56)

A	True
B	False

Question 4 Explanation: 

No, it can increase by any integer value when moving from one key to another.

Question 5

What is the piping a Python 3 file into Java do? (ID-CPF-18)

A	It takes the output of the Python 3 program and use it as inputs for Java.
B	It injects the codes of Java into a Python 3 program for processing.
C	It takes the code from Python 3 and use it to process graphical information using Java.
D	It makes the communication between Python 3 and Java possible by opening input/output sequences on both direction.

Question 6

What is the output of the following code? (ID-CPF-28)
myName = "Sanuja\nSenanayake"
print (myName)

A	Sanuja\nSenanayake
B	Senanayake Sanuja
C	Sanuja Senanayake
D	SanujaSenanayake
E	Sanuja Senanayake

Question 7

In general, it is a discouraged to use global variables in a program. But why would you ever want to use one? (ID-CPF-72)

A	To avoid repetition of the same variable in several functions.
B	To create low memory intensive programs.
C	Only to create small scale programs.
D	To avoid limitations of Python 3 coding structure.
E	There is absolutely no reason to create any global variable regardless of the programming language.

Question 8

You have the following list with too much information. To protect privacy, you were told to split and print ONLY the geographical information. How do you do that? (ID-CPF-49)
data = "A male who lives in Calgary, Alberta, Canada."

A	print(data[ :25])
B	print(data[20: ])
C	print([data:25])
D	print(data[25: ])
E	print(data[ :20])
F	print([data:20])

Question 9

It is possible to create a pure Python 3 code with no other supporting languages to analyze SINs (Social Insurance Number) validity. (ID-CPF-58)

A	True
B	False

Question 9 Explanation: 

You can use if, len and condition checks.

Question 10

What print statement would be produced from the following while loop? (ID-CPF-39)

A	Canada Quebec Alberta
B	Canada Alberta Quebec Alberta
C	Alberta Quebec Canada
D	An error will be printed because this code is not valid in Python 3.
E	Canada Alberta Alberta Quebec
F	Canada Alberta Quebec

Question 11

In order to satisfy the Python 3 rules, what has to be true in order for a code to be a function? (ID-CPF-03)

A	A function must take a parameter.
B	A function must be predefined in order to call it in.
C	A single function cannot have more than one result.
D	Functions must always return a result.

Question 12

In Python 3, dictionary can be ONLY be created in one dimension. (ID-CPF-10)

A	True
B	False

Question 12 Explanation: 

It can be created in several dimensions including 3D and up. However, it is possible to create an empty dictionary and/or an empty key, which may be classify as a 1D system.

Question 13

In order to preform the following operation, what must be corrected in the following code? (ID-CPF-60)

value = 55
result = sqrt(55)
print (result)

A	Call in the sys library; import sys Request the function from math; math.sqrt()
B	Call in the math library; import math
C	Call in the math library; import math Request the function from sys; sys.sqrt()
D	Call in the math library; import math Request the function from math; math.sqrt()
E	Call in the sys library; import sys Request the function from sys; sys.sqrt()

Question 14

In order to open an external file to be used in a Python 3 program, you must import which of the following library? (ID-CPF-25)

A	open
B	sys
C	sttder
D	math
E	file

Question 15

Given, (ID-CPF-21)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in s[3] ?

A	2
B	[6,7]
C	[4,5]
D	3

Question 16

If you were to create a program to keep track of "moody" days of your girlfriend for each month (the same way Android/iOS period & ovulation app), what kind of Python 3 function would you use? (ID-CPF-38)

A	A list
B	A tuple
C	A string
D	A dictionary

Question 17

This is year 2012 and your prof wants you to write the year on your exam in base-16. If 2012 is in base-10, what is it in base-16? (ID-CPF-30)

A	7DDC
B	8DCD
C	7C4
D	7DC

Question 18

Your credit card information at a bank in Canada is most likely kept in a... (ID-CPF-69)

A	encrypted text files (128-bit to 256-bit server side).
B	set of binary codes.
C	database.
D	low level programming code.

Question 19

If you want to iterate all the key values in a Python 3 dictionary name dic, how do you do that in a for loop? (ID-CPF-46)

A	for j in key.dic():
B	for k in keys.dic():
C	for i in dic.key():
D	for p in dic.keys():

Question 19 Explanation: 

Regardless of the letter/name we place for iteration (i,j,k,p), the right format is dicName.keys() to all in all the keys appear in the dictionary named dic.

Question 20

Python 3 will not allow the calling of a function inside another function. (ID-CPF-40)

A	False
B	True

Question 21

According to relational model, it is easy to analyze, process and produce meaningful outputs from large scale databases when what has been done? (ID-CPF-65)

A	Replacing data with information AFTER processing the initial condition.
B	Pulling data out one at a time and comparing the values against information.
C	Organization of data into tables.
D	Splitting of large scale data schemes into small scale schemes.
E	Replacing data with information BEFORE processing them.

Question 22

On the following Python 3 code, what is ".rstrip()" do? (ID-CPF-55)
data = input("Please enter your name: ").rstrip()

A	To add the white space formatting at the end of the print statement.
B	Take the carriage return out of the input statement.
C	To add the carriage return into the input statement.
D	Take the white space out of the end print statement.

Question 23

What does the following code print when run? (ID-CPF-88)

A	54
B	45
C	15
D	0
E	19

Question 24

What would you get when you called in cbc.values() from a dictionary named cbc with some keys and values? (ID-CPF-81)

A	A list of all the values in the dictionary, cbc.
B	All the keys with no value data in a list.
C	A list of any dimension, except 1D containing all the values.
D	All the keys and associated values in two independent lists.
E	All of the answers are wrong.

Question 25

You hit the bonus question! (ID-CPF-33)
Python 3 is extensively used in which of the following programs/areas? (Not going to show up on the exam, but just for fun)

A	Windows Server 2012 / Windows 8 Pro
B	Online MMO servers
C	Android OS
D	MS Access Database system
E	BlackBerry 10 OS

Question 26

What is M[1][2] on the following script? (ID-CPF-92)

A	8
B	An error
C	5
D	2
E	6

Question 27

Which type of data sorting technique is built into Python 3 functions library? (ID-CPF-43)

A	bubble sort
B	quick sort
C	insertion sort
D	loop sort
E	selection sort

Question 28

How do you delete all the keys and values from a dictionary named test efficiently? (ID-CPF-80)

A	del.keys()
B	delete.test()
C	test.clear()
D	del.test()
E	clear.test()

Question 29

Given, (ID-CPF-20)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in len(s) ?

A	4
B	1
C	5
D	2
E	10

Question 30

If you were to add to an empty dictionary name sanuja, how do you do that? (Direct addition without variables.) (ID-CPF-82)
sanuja = { }

A	sanuja[keyName] = valueName
B	sanuja["keyName"] = "valueName"
C	sanuja["keyName"] = valueName
D	sanuja[keyName] = valueName

Question 31

A list will only take in a numeric value, unless you specify the item as a non-numeric. (ID-CPF-77)

A	True
B	False

Question 31 Explanation: 

True because if you want to add a non-numeric item such as a person's name, it must be specified using quotes; eg. "sanuja" OR 'sanuja'

Question 32

Python 3 ONLY have mutable type. (ID-CPF-15)

A	False
B	True

Question 33

If a function has to run it's body for few different times and record it's results after completing each iteration, a return can be used to consolidate the results. (ID-CPF-75)

A	True
B	False

Question 33 Explanation: 

Not only this is true in Python 3, but also true in many other languages such as JavaScript, PHP, CSS, C#, etc.

Question 34

Why would this simple function would not work? (ID-CPF-50)

fun1():
.... print ("Done")

fun1()

A	The function is not defined.
B	The indentation pf the function is wrong.
C	The function failed to return any useful data.
D	The print statement formatting is wrong.
E	The function lacks any meaningful operations.

Question 35

Can you read from a non-text(.txt) external file using a Python 3 script? (ID-CPF-54)

A	No
B	Yes

Question 36

On the following list, how do you remove the number 8? (ID-CPF-09)
myList = [1,2,3,8,4,5,6]

A	append.myList(8)
B	myList.append(8)
C	myList = [8]
D	myList.pop(8)

Question 37

The following Python 3 code is written to print "sanuja.com" several times. (ID-CPF-01)
while k > 10:
.... print ("ha")
.... k = k + 2
What's wrong with the code?

A	The usage of a while loop instead of a for loop will create inaccurate results.
B	The program will crash due to inaccurate print statement.
C	The variable k is not defined causing a NameError
D	The program will NOT crash, but will also provide no print statements in the terminal.

Question 38

What is M[2] on the following script? (ID-CPF-90)

A	[4, 5, 6]
B	5
C	[7, 8, 9]
D	3
E	2

Question 39

Poor commenting in the source file can cause a program to crash. (ID-CPF-74)

A	True
B	False

Question 39 Explanation: 

Comments are for humans not for machines. Strong constructive comments add value to a program by giving information about what each segment of code suppose to do when it runs. It has no value to the computer itself in Python 3. However, on certain programming languages such as PHP it can add additional parameters to the code.

Question 40

How many values can a key in a dictionary can hold? (ID-CPF-05)

A	More than one and less than zero
B	One
C	Cannot be more than the number of keys in a particular dictionary
D	Unlimited given the condition that resources are unlimited

Question 41

You have the following string which you must split in to it's elements describing the each unique item: (ID-CPF-48)
data = "Sanuja Senanayake , Calgary , http://sanuja.com , (403) 111-1111"
The elements should seperate; full name, city, web address, phone number. How do you do that?

A	list = split.data(" , ")
B	list = split.data(" ")
C	list = data.split(" , ")
D	list = data.split(" ")
E	data = data.split(" , ")

Question 42

What does the following code print if the print(x) on line 6 has been replaced by print(len(M))? (ID-CPF-89)

A	1
B	9
C	0
D	3
E	45

Question 43

How do you add a value to the following empty list? (ID-CPF-07)

myList = [ ]

A	myList.append("125")
B	append.myList(125)
C	append.myList("sanuja")
D	myList.append(sanuja)

Question 44

In Python 3 functions, how is formal parameters are different from actual parameters? (ID-CPF-70)

A	The formal parameters are post defined and actual parameters are pre defined.
B	The formal parameters are the values passed into a function when it is called in and the actual parameters are variables in a function definition.
C	The formal parameters are often used by armature programmers while, most companies and professionals opt for actual parameters in a function definition due it's flexibility. Hint: Whhhhahhhat? Nooooo! It is other way around you buffoon! 🙂
D	The formal parameters are variables in a function definition and actual parameters are the values passed into a function when it is called in.

Question 45

Which of the following statement is true given a for loop first line; for i in range (x,y)? (ID-CPF-79)

A	x and y values are both inclusive.
B	x and y values are both exclusive.
C	x is exclusive and y is inclusive.
D	x is inclusive and y is exclusive.

Question 46

When do we use SQL (Structured Query Language)? (ID-CPF-66)

A	It is used to take commands from several databases for comparison and analysis.
B	It is used to take commands from a database.
C	It is a client side programming language used to display server side Python 3 language operations.
D	It is used to send commands to database.

Question 47

What is the default behavior of a run time errors? (ID-CPF-68)

A	Creation of the try block.
B	Crash of the program.
C	Creation of the except block.
D	Quitting the program by quit() function.

Question 48

This will read from an external text file... (ID-CPF-19)

A	inf = open ("fileName.txt", "r")
B	inf = open (fileName.txt, "r")
C	inf = open ("fileName.txt", w)
D	inf = open ("fileName.txt", r)
E	inf = open (fileName.txt, r)

Question 49

Dictionaries have ____ to assign position to variables. (ID-CPF-12)

A	index numbers
B	values
C	keys
D	multipliers
E	lengths

Question 50

Which one of the following is NOT a valid Python 3 command? (ID-CPF-32)

A	for i in range(9):
B	Print()
C	input()
D	float()

Question 50 Explanation: 

You cannot interchange capital and simple letters. In this particular example, Print() is NOT a build in function because the "P" in "print()" should NOT be capitalized.

Question 51

In high level programming languages such as Python 3, variables can be called in before they has been created. (ID-CPF-73)

A	False
B	True

Question 51 Explanation: 

An error called, Undefined Variable will cause the program to crash (or go into an except block).

Question 52

How do you take a value from one function and pass it to another? (ID-CPF-51)

A	After the writing the two functions, make first function equals to the second function. eg. fun1() = fun2()
B	Take a return from the reading function and pass the return to a variable. Then pass the variable to the next function.
C	In Python 3, you cannot take data from one function and pass it to another. It is not a valid argument.
D	Take a reading from the first function and pass it to a variable. Then pass the variable to the next function.

Question 53

What is the most efficient way to combine the following two lists? (ID-CPF-24)
s1 = [0, 1, 2, 3]
s2 = [4, 5, 6, 7, 8, 9]

A	Writing a "while" loop with an empty list called s3 = [] that will take each value of s1 and combine it with s2 using s3.append()
B	Slice the either one of the lists into its elements and place them in a new list called s3.
C	s3 = s1 + s2
D	Writing a "for" loop with an empty list called s3 = [] that will take each value of s1 and combine it with s2 using s3.append()

Question 54

An empty Tuple can be described as a... (ID-CPF-11)

A	tp = { }
B	tp = " "
C	tp = [ ]
D	tp = ( )

Question 55

Given, (ID-CPF-23)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in s[-2][0] ?

A	Invalid Index Error
B	8
C	6
D	[8,9]
E	2

Question 56

Which of the following operation is most destructive in used improperly? (ID-CPF-27)

A	inf = open ("file_name.txt", "a")
B	inf = open ("file_name.txt", "r")
C	inf = open ("file_name.txt", "w")
D	inf = open ("file_name.txt", "e")

Question 57

After tracing of a code you wrote, you found no errors at all. However, your boss keeps telling you that the program is wrong. It is most likely that your program contains one or more... (ID-CPF-61)

A	invalid parameter error(s).
B	syntax error(s).
C	logic error(s).
D	Boolean error(s).
E	runtime error(s).

Question 58

Which of the following statement(s) is(are) correct? (ID-CPF-41)

A	Text files and databases are both viable options for managing large amounts of data
B	In a relational database, the schema describes the structure of the data in the database
C	In a string, there is a unique index number associated with each value. Hint: Strings do not have index numbers.
D	A primary key is a unique value associated with each row in a table
E	A dictionary cannot be updated using a loop (for loop or while loop) because a dictionary contains more than one dimension. Hint: You can use a loop with two conditions to append to a dictionary.

Question 59

Which of the following languages can be used to write an algorithm for Python 3? Select all that apply. (ID-CPF-42)

A	Machine code
B	Japanese
C	Python 3 only
D	English
E	Any version of Python up to and including Python 3
F	Binary Code

Question 60

How do you add a tab (like a keyboard tab entry) to a Python 3 statement? (ID-CPF-17)

A	"\n text here"
B	"\t text here"
C	"\space text here"
D	"\tab text here"

Question 61

If you were to add one number to another from 0 to 100, what type of method would you use? (ID-CPF-02)

A	A iteration loop
B	A for loop
C	A while loop
D	A dictionary

Question 62

Lists are ordered data structures with specific index values for each item. (no random index assignments) (ID-CPF-57)

A	False
B	True

Question 63

... sort is the method of creating a sorted list by randomly taking an item from the unsorted list and placing in the right location in the sorted list until all the items are sorted. (ID-CPF-45)

A	Insertion
B	Selection
C	Bubble
D	Quick

Question 64

How do you assign default parameters to a function in Python 3? (ID-CPF-71)

A	def function (i, x, y, z)
B	def function (i=2, x=90, y=57, z=23)
C	pass (i, x, y, z) = function (2, 90, 57, 23)
D	function (i=2, x=90, y=57, z=23) Hint: No, you cannot assign default parameters to a function when it is called in!

Question 65

If a incorrect value is passed in to a function, what will happen when program runs? (ID-CPF-76)

A	It will stop working, just before it run to to the incorrect values.
B	It will either crash or look for an except block once it has at least entered the function once.
C	It will either crash or look for an except block before it will reach the function.
D	It will skip over the body of the function and run the rest of the code.

Question 66

Linux based OS versions such as MacOS 9 and up, ONE character is used for a new line and in Windows TWO characters are used for a new line. (ID-CPF-29)

A	False
B	True

Question 66 Explanation: 

MacOx 9 and up \r
Windows \r\n

Question 67

What is M[3] on the following script? (ID-CPF-90)

A	[1, 2, 3]
B	9
C	An error
D	3
E	[4, 5, 6]

Question 68

What output would you expect from the following program? (ID-CPF-78)

4 in [11,4,73,19,13,24]

A	4
B	True
C	No
D	Yes
E	False

Question 69

A print statement can be used as a computer code for analysis. (ID-CPF-59)

A	True
B	False

Question 69 Explanation: 

The print() statements provide information for the end user and can NOT be used to create code itself. It adds value to the code, but often is independent of the code itself, except for display purposes.

Question 70

What is the key feature for a high level programming language? (ID-CPF-35)

A	Built in libraries and and functions.
B	Use of binary based commands.
C	Use of command line infrastructure.
D	Use of English language with UTF-8 and up coding system.

Question 71

Is the following variable name is a valid name? (ID-CPF-52)
University of Calgary = Calgary

A	Yes
B	No

Question 71 Explanation: 

Variable name appear on the left side of the assignment operator and the variable itself appear on the right side.

On the left side "University of Calgary" is NOT a valid variable name because you cannot have white space(in this case space) between variable letters. You MAY fix this by replacing a the variable name with, UniversityOfCalgary

Question 72

How is text different from data? (ID-CPF-84)

A	Text hold program instructions typically in machine code and data point to all global consents and variables.
B	Data is human readable and text is not human readable.
C	Data hold program instructions typically in machine code and text point to all global consents and variables.
D	Data points to information and text point to all global consents and variables.

Question 73

Which type of sorting described by the following statement? (ID-CPF-44)

Find the smallest number in the unsorted list, remove that number and add it to the end o the sorted list. Repeat this sequence until there are no numbers in the unsorted list.

A	quick sort
B	bubble sort
C	selection sort
D	insertion sort

Question 74

Which of the following is a mutable type? (ID-CPF-16)

A	boolean
B	integer
C	string
D	float
E	lists

Question 75

Most current databases use relational model to sort and organize elements. (ID-CPF-63)

A	True
B	False

Question 76

Which one of the following is a list? (ID-CPF-06)

A	myList = {2.5, -9.9, "sanuja", 9615, "BBC", 12}
B	myList = [peace, "25", sanuja, "666", BBC, 2012]
C	myList = (1,2,3,UofC,5.5,#)
D	myList = [2.5, -9.9, "sanuja", 9615, "BBC", 12]
E	myList = {peace, "25", sanuja, "666", BBC, 2012}
F	myList = [peace, "25", sanuja, "666", BBC, 2012]

Question 77

The SU Wellness Centre University of Calgary use a Java program for billing. (Similar to Python 3). Do you think a code like the following can be used for calculating the price for medicine in Fall 2012? (ID-CPF-04)
cost = 55.99
gst_multiplier = 0.07
gst = cost * gst_multiplier
total = cost + gst

print ("The total amount you pay %.2f" % total)

A	No, this program will not work because the GST calculation is wrong for Fall 2012.
B	No, this program will generate a no print statements because the initial amount is NOT a user input variable.
C	No, this program will crash due to Syntax Error caused by invalid format specifiers.
D	Yes, this simple program may work.

Question 78

Well developed tools for databases such as MySQL, Python libraries primarily used for what purpose? (ID-CPF-67)

A	To allow flexibility for multiple programming languages to interact with each other.
B	To create Python code with low level programing codes.
C	To deal with large amounts of data.
D	To lower failure rate of the connection between data and information.

Question 79

How do you format the output of a numeric answer to two (exactly two) decimal places like shown below? (ID-CPF-62)

A	print ("It is 2f" % VARIABLE, "TEXT HERE !")
B	print ("It is %.2" % VARIABLE, "TEXT HERE !")
C	print ("It is %.2f" % VARIABLE, "TEXT HERE !")
D	print ("It is %.2" % VARIABLE, "TEXT HERE !")
E	print ("It is %2f" VARIABLE % , "TEXT HERE !")

Question 80

How many characters in the following string? (ID-CPF-36)
s = "Love Canada"

A	all of the answers are incorrect!
B	10
C	8
D	11

Question 81

Information about function calls and pointers for local variables and formal parameters are stored in as what in a program's memory? (ID-CPF-85)

A	Text
B	Stack
C	Data
D	Heap

Question 81 Explanation: 

... and it's memory may change with time as read and write cycles varies from time to time.

Question 82

This while loop will produce a print statement... (ID-CPF-31)
s = 0
while s < 5:
.... s = (s + 1) % 2
.... print (s)

A	1 1 0 1 1 0 1 1 0... to infinity
B	0 1 0 1 0 1... to infinity
C	1 0 1 0 1 0... to infinity
D	0 1 0 1 0 1
E	1 0 1 0 1 0

Question 83

Given, (ID-CPF-22)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in s[3][1] ?

A	4
B	5
C	7
D	6
E	An Index Error message

Question 84

A heap holds any type of objects allocated as the program runs. (ID-CPF-86)

A	False
B	True

Question 85

In rational database model, what is schema represents? (ID-CPF-64)

A	The actual data that being stored.
B	The structure of the data.
C	The complexity of the database.
D	The user input processing by the database.
E	The fail-over rate of a database.

Question 86

How do you exit a Python 3 script in an even of an error? (ID-CPF-53)

A	quit()
B	closed()
C	fclosed()
D	quit(-1)
E	closed(-1)

Question 87

While the position of a character in a string always counts from zero (0), the counting of the string length always start from one (1). (ID-CPF-37)

A	True
B	False

Question 88

A length of a dictionary is always defined by the number of what elements? (ID-CPF-13)

A	commas
B	keys
C	values
D	units

Question 89

Python 3 can be best described as a... (ID-CPF-34)

A	high level programming language.
B	low level programming language.
C	relatively complex programming language.
D	C# based programming language.

Question 90

What is the output of the following operation if a user entered 3 (exactly, no white space or any other characters) as the value? (ID-CPF-08)
power = input("Please enter a value: ")
answer = 5**power
print (answer)

A	10
B	25
C	125
D	Error, mathematical operation with a string.

Question 91

Based on the following information: (ID-CPF-83)
a = [ ] is a ...
b = { } is a ...

A	a = [ ] is ais a tuple. b = { } is a dictionary.
B	a = [ ] is a list. b = { } is a dictionary.
C	a = [ ] is a dictionary. b = { } is a list.
D	a = [ ] is a dictionary. b = { } is a tuple.

Question 92

What is 55 base 8 in base 2 ? (ID-CPF-87)

A	10 1101
B	10 0010
C	F8D5
D	D56

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Credits: Based on the excellent class notes provided by, Dr. Ben Stephenson during Fall 2012.
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