CSC 221
Given x = 1, y = 2, and z = 3, how is the expression evaluated? In the choices, items in parentheses are evaluated first. (x == 5) or (y == 2) and (z == 5) False OR (True AND False) --> False OR False --> False False OR (True AND False) --> False OR True --> True (False OR True) AND False --> True AND False --> False (False OR True) AND False --> True AND False --> True
a
How many times will the body of the loop execute? my_list = [6, 2, 8, -1, 12, 15, -7] x = Get first my_list value While x is not negative: put "Positive number!" to output x = Get next my_list value Put "Done" to output 3 4 5 7
a
How many times will the print statement execute? for i in range(1, 3): for j in range(8, 12, 2): print(f'{i}. {j}') 4 6 9 36
a
Iffactor = 24, which format will generate '**24', right aligned in its field? {factor:*>4} {factor:*<4} {factor:*>2} {factor:*<2}
a
What condition should replace ZZZto output "Same name" only if the values of two variables are the same? my_name = input("Enter my name: ") your_name = input("Enter your name: ") if ZZZ: print("Same name") my_name == your_name my_name = your_name my_name is your_name id(my_name) == id(your_name)
a
What conditions have to be true to make the following code display "B"? if color == 'red': if style < 3: print('A') elif style < 5: print('B') else: print('C') elif color == 'blue': print('D') color is 'red' and style is 4 color is 'red' and style is 5 color is 'red' and style is 6 color is 'blue' and style is 3
a
What is output? my_list = [20, 25, 'hello'] new_list = my_list[:] print(new_list[0:2]) print(my_list[-1]) [20, 25] hello [20, 25] [] [20, 25, 'hello'] hello [20, 25, 'hello'] []
a
What is output? my_poem = 'Roses are red; Violets are blue' new_separator = '.' new_poem = my_poem.split(';') print(new_separator.join(new_poem)) Roses are red. Violets are blue Roses.are.red.Violets.are.blue Roses;are;red;Violets;are;blue Roses are red Violets are blue
a
What is output? my_string = 'Greetings!' print(my_string == 'greetings!') print('tin' in my_string) print('Hello' > my_string) False True True True True True True True False False True False
a
What is output? new_list = [10, 20, 30, 40, 50] for i in new_list: print(i * 2) 20 40 60 80 100 10 10 20 20 30 30 40 40 50 50 [10, 20, 30, 40, 50, 10, 20, 30, 40, 50] [20, 40, 60, 80, 100]
a
What is the ending value of a when b is assigned with the value 5?a = 7a = b + 5 if b > 5 else 0 0 5 7 10
a
What is the output? LB_PER_KG = 2.2 def kgs_to_lbs(kilograms): pounds = kilograms * LB_PER_KG return pounds pounds = kgs_to_lbs(10) print(pounds) 22 No output: LB_PER_KG causes an error due to being outside any function No output: LB_PER_KG must be declared withinkgs_to_lbs() No output: Variable pounds declared in two functions causes an error
a
What is the output? my_list = [3, 7, 0, 2, -1, 8] index = 0 while my_list[index] > 0: print(my_list[index], end=' ') index += 1 3 7 3 7 0 3 7 0 2 3 7 0 2 -1
a
What is the output? names = ['Bob', 'Jill', 'Xu'] ages = [24, 18, 33] for index in [2, 0, 1]: print(names[index] + ":" + str(ages[index])) Xu:33 Bob:24 Jill:18 Bob:24 Jill:18 Xu:33 Xu, Bob, Jill:33, 24, 18 Xu:24 Bob:18 Jill:33
a
What is the value of x after the following code is executed? x = 17if x * 2 <= 34:x = 0else:x = x + 1x = x + 1 1 18 19 35
a
What sequence is generated by range(1, 10, 3) 1 4 7 1 11 21 1 3 6 9 1 4 7 10
a
Which X and Y cause the program to print the final velocity in feet per second? Note that the distance and initial_velocity are given using meters instead of feet. def final_velocity(initial_velocity, distance, time): return 2 * distance / time - initial_velocity def meters_to_feet(distance_in_meters): return 3.28084 * distance_in_meters # display final velocity in feet per second t = 35 # seconds d = 7.2 # meters v_i = 4.6 # meters / second print(f'Final velocity: {final_velocity(X, Y, t):f} feet/s') X = meters_to_feet(v_i), Y = meters_to_feet(d) X = v_i, Y = meters_to_feet(d) X = meters_to_feet(v_i), Y = d X = v_i, Y = d
a
Which XXX will display one more than half of the smallest value of w1, w2, and w3? def find_min_value(a, b, c): if a <= b and a <= c: return a elif b <= a and b <=c: return b else: return c w1 = 7 w2 = 3 w3 = 12 y = XXX print(y) find_min_value(w1, w2, w3)/2 + 1 find_min_value(w1+1, w2+1, w3+3)/2 find_min_value()/2 + 1, w1, w2, w3 find_min_value: w1, w2, w3() /2 + 1
a
Which algorithm solves the problem for finding the minimum of 5 values, such as 3 6 -1 8 4? min = first value for each value if value < min min = value min = first value for each value if value > min min = value min = first value for each value if value == min min = value min = first value for each value if value < 0 min = value
a
Which common algorithm should be used to quickly find Pizza Hut in the phone book? Binary search Linear search Longest common substring Shortest path algorithm
a
Which function gives the change in temperature for an object, given the heat transfer, mass and specific heat capacity? Note that , where Q is heat transfer, m is mass, c is specific heat capacity, and is the change in temperature. def temperature_change(q, m, c): return q / (m * c) def heat_transfer(m, c, delta_T): return m * c * delta_T def heat_transfer(m, c, delta_T): return q / (m * c) def temperature_change(q, m, c): return (m * c) / q
a
Which programming language is compiled and statically typed, but not object-oriented? C C++ Java Python
a
Given year is positive, which expressions for XXX, YYY, and ZZZ will output the correct range? Choices are in the form XXX / YYY / ZZZ. If XXX: Output "1-100" Else If YYY: Output "101-200" Else If ZZZ: Output "201-300" Else: Output "Other" year > 0 / year > 99 / year > 199 year > 0 / year > 100 / year > 200 year < 100 / year < 200 / year < 300 year < 101 / year < 201 / year < 301
a?
What is the ending value of z? z = 0 a = 5 while a > 0: a = a - 1 if a == 2: continue z = z + a 7 8 9 10
a?
A language is called _____ when upper case letters in identifiers are considered different from lower case letters. unambiguous case sensitive case strict camel case
b
A programmer must write a program that lists all the words that appear in a text file that occur more than 10 times. Which of the following tasks would be a good first step in an incremental programming process? Display a list of all the unique words in the file. Display the file's contents. Display a table of all the words in the file, with how many time that word occurs. Write any import statements needed for the program, and print "Done Step 1".
b
Assigning a value to a floating point variable that is too large for the computer to represent is a condition called _____ . bit error overflow overcapacity system error
b
Consider the stringnew_string = 'Code development in Python'. Which statement will return 'velop' as a substring? new_string[-18:12] new_string[7:11] new_string[8:12] new_string[-19:12]
b
For the following constructor, identify the correct instantiation. class Student: def __init__(self,first_name, last_name, sub='Math'): self.sub= sub self.first_name = first_name self.last_name = last_name Student() Student('Daniel', 'Smith') Student('Daniel') Student(sub = 'English')
b
For the given program, how many print statements will execute? def print_shipping_charge(item_weight): if (item_weight > 0.0) and (item_weight <= 10.0): print(item_weight * 0.75) elif (item_weight > 10.0) and (item_weight <= 15.0): print(item_weight * 0.85) elif (item_weight > 15.0) and (item_weight <= 20.0): print(item_weight * 0.95) print_shipping_charge(18) print_shipping_charge(6) print_shipping_charge(25) 1 2 3 9
b
If the input is 10, what is output? integer x integer i x = Get next input for i = 1; i < x; i = i + 1 if x % i == 0 Put i to output Put " " to output 2 1 2 5 1 2 5 10 (no output)
b
Three sock types A, B, C exist in a drawer. Pulled socks are kept and not returned. Which is true? If the first two pulls are different socks, only one more pull is needed for a match If the first three pulls are different socks, only one more pull is needed for a match If the first two pulls are different socks, at least two more pulls are needed for a match If the first three pulls are different socks, at least two more pulls are needed for a match
b
To quit, a user types 'q'. To continue, a user types any other key. Which expression evaluates to true if a user should continue? key == 'q' not(key == 'q') (not(key)) == 'q' key == (not('q'))
b
To quit, a user types 'q'. To continue, a user types any other key. Which expression evaluates to true if a user should continue? key == 'q' key != 'q' (!key) == 'q' key == (!'q')
b
What is output? b1 = [[7, 5, 9], [3, 2, 1]] b1.sort() b2 = b1[:] print(b1, b2) for elem in b2: elem.sort() print(b1, b2) [[3, 2, 1], [7, 5, 9]] [[3, 2, 1], [7, 5, 9]] [[3, 2, 1], [7, 5, 9]] [[1, 2, 3], [5, 7, 9]] [[3, 2, 1], [7, 5, 9]] [[3, 2, 1], [7, 5, 9]] [[1, 2, 3], [5, 7, 9]] [[1, 2, 3], [5, 7, 9]] [[1, 2, 3], [5, 7, 9]] [[1, 2, 3], [5, 7, 9]] [[1, 2, 3], [5, 7, 9]] [[1, 2, 3], [5, 7, 9]] Runtime error
b
What is output? new_list = [0, 1, 2, 3, 4] print(all(new_list)) print(min(new_list) + max(new_list)) True 4 False 4 False 10 True 10
b
What is output? new_list = [10, 20, 30, 40] for i in new_list[:]: print(i) new_value = new_list.pop(0) 10 30 10 20 30 40 20 30 40 20 40
b
What isoutput? def calc(num1, num2): return 1 + num1 + num2 print(calc(4, 5), calc(1, 2)) Group of answer choices 9 3 10 4 145 112 4, 5, 1, 2
b
Which XXX causes the program to output the message "Hello!"? def print_message(): print('Hello!') XXX print_message print_message() def print_message() print_message('Hello!')
b
Which XXX is valid for the following code? def calc_sum(a, b): return a + b XXX print(y) y = calc_sum() y = calc_sum(4, 5) y = calc_sum(4 + 5) calc_sum(y, 4, 5)
b
Which algorithm steps correctly solve the problem: How many occurrences of 2 exist in the array? (1) loop through array (2) increment counter if 2 is found (3) inspect each array element (1) loop through array (2) inspect each array element (3) increment counter if 2 is found (1) increment counter if 2 is found (2) loop through array (3) inspect each array element (1) inspect each array element (2) loop through array (3) increment counter if 2 is found
b
Which expression evaluates to false if x is 0 and y is 10? (x == 0) && (y == 10) (x == 0) && (y == 20) (x == 0) || (y == 10) (x == 0) || (y == 20)
b
Which formatting presentation typeis used to display an integer? i d :d (int)
b
Which function call would cause an error? def print_product(product_name, product_id, cost): print(f'{product_name} (id: #{product_id}) - ${cost:.2f}') print_product('Speakers', 21224, 32.99) print_product('Speakers', 32.99, 21224) print_product('Speakers', cost=32.99, product_id=21224) print_product(product_id=21224, product_name='Speakers', cost=32.99)
b
Which is true if an efficient solution for one NP-complete problem is found? The algorithm has exponential runtime There is an efficient algorithm for all other NP-complete problems Other NP-complete problems are not affected, and don't have efficient algorithms The algorithm is incorrect because solving an NP-complete problem is impossible
b
Which of the following is a correct definition for an instance method, print_age(), that has two parameters, date_of_birth and date_today, passed to it? def print_age(self): def print_age(self, date_of_birth, date_today): def print_age(date_of_birth, date_today): def print_age():
b
Which of the following is an instance created by the code given below? class Employee: def __init__(self): self.id = 0 self.name = 'ABC' self.title = 'Business Analyst' employee1 = Employee() employee1.id = 122654 print(f'{employee1.id} {employee1.name} {employee1.title}') Employee employee1 id 122654
b
Which of the following loops is best implemented with a for loop? Asking a user to enter names until the user enters 'Quit'. Counting the number of negative values in a list of integers. Starting from a user-entered integer, increment the value until the value is a prime number. Reading values from a temperature sensor until it gives a value greater than 100 degrees.
b
Which range() function call generates every even number between 20 and 30 (including both 20 and 30)? range(20, 30, 2) range(20, 31, 2) range(30, 20, 2) range(20, 22, 24)
b
Which real-life activity is similar to doing a binary search? Looking for a matching sock in a drawer full of socks Looking up Pizza Hut in the phone book Looking for a house address on a residential street Looking for a largest number in an unsorted array
b
Which statement correctly explains a difference between lists and tuples? The built-in function len() works with lists but not with tuples. List items can be changed, while tuple items can't be changed. Listitems can be of any type, while tuple types can only be numbers. List items use [ ] operators to access items by index, while tuples use ( ) operators to access items by index.
b
Which statement istrueabout the *args and **kwargs special arguments? Any single function definition can only define *args or **kwards, but never both. Both may be used in a single function call, but *args must appear before **kwargs in the argument list Both may be used in a single function definition, but **kwargs must appear before *args in the argument list. Both may be used in a single function definition, and *args and **kwargs may appear in any order in the argument list.
b
Which statementoutputs the text: "I won't quit!"? print(I won't quit!) print("I won't quit!") print('I won't quit!') print('I won't quit!', punctuation=True)
b
A(n) _________ acts as afactorythat creates instance objects. instance object instance attribute class object class attribute
c
Choose the option in which the value of new_list is ['greetings']. my_list = ['hello', 'greetings', 'hi', 'hey'] new_list = [i for i in my_list if len(i)<5] my_list = ['hello', 'greetings', 'hi', 'hey'] new_list = [i for i in my_list if len(my_list)>5] my_list = ['hello', 'greetings', 'hi', 'hey'] new_list = [i for i in my_list if len(i)>5] my_list = ['hello', 'greetings', 'hi', 'hey'] new_list = [i for i in my_list if len(my_list[i])<5]
c
Choose the option that gives ['ABC', 'ABC'] as the output. my_list = ['ABC', 'DEF'] my_list[len(my_list)-1] = 'DEF' print(my_list) my_list = ['ABC', 'DEF'] my_list[len(my_list)] = 'ABC' print(my_list) my_list = ['ABC', 'DEF'] my_list[len(my_list)-1] = 'ABC' print(my_list) my_list = ['DEF', 'ABC'] my_list[len(my_list)-1] = 'ABC' print(my_list)
c
Consider the problem of determining the longest word in a list of words with various lengths. What is the problem input / output? String value for the longest word / Integer value for the number of words String value for the longest word / Array of all words Array of all words / String value for the longest word Integer value for the number of words / String value for the longest word
c
If the input is -10, what is the output? integer x x = Get next input if x < 10 Put "Win " to output if x < 20 Put "Rocky" to output Put ", win!" to output , win! Win, win! Win Rocky, win! Rocky, win!
c
If the input is 25, what is the final value of calc? integer z integer calc calc = 0 z = Get next input while z <= 100 calc = calc + z z = z * 2 75 100 175 200
c
If the input is 5, what is output? integer userVal integer i userVal = Get next input for i = userVal; i > 0; i = i - 1 Put i to output Put " " to output 4 3 2 1 4 3 2 1 0 5 4 3 2 1 5 4 3 2 1 0
c
The following program prints the number of integers in my_list that are greater than the previous integer in the list. Which choice fills in the blank to complete the for loop? my_list = [ 3, 2, 7, 8, 6, 9 ] count = 0 for _____: if my_list[i] > my_list[i-1]: count = count + 1 print(count) i in range(0, len(my_list)) i in range(0, len(my_list)+1) i in range(1, len(my_list)) i in range(1, len(my_list)+1)
c
What does this program do? integer x integer y x = Get next input y = Get next input if x > y Put x to output else Put y to output Outputs the minimum of the two integers; if they are equal, outputs that integer Outputs the minimum of the two integers; if they are equal, outputs nothing Outputs the maximum of the two integers; if they are equal, outputs that integer Outputs the maximum of the two integers; if they are equal, outputs nothing
c
What is output? my_list = [['a b c'], ['d e f']] new_list = my_list[0][0].split(' ') print(new_list[-2]) e a b d
c
What is the output? def print_water_temp_for_coffee(temp): if temp < 195: print('Too cold.') elif (temp >= 195) and (temp <= 205): print('Perfect temperature.') elif (temp > 205): print('Too hot.') print_water_temp_for_coffee(205) print_water_temp_for_coffee(190) Too cold. Perfect temperature. Perfect temperature. Too cold. Perfect temperature. Too cold.
c
What is the output? for j in range(2): for k in range(4): if (k == 2): break print(f'{j}{k}', end=' ') 00 01 02 00 01 02 03 00 01 10 11 00 01 02 10 11 12
c
What is the output? x = 18 while x % 3 == 0: print(x, end=' ') x = x // 3 6 6 2 18 6 18 6 2
c
Which branch structuredoes a program use to output "Yes" if a variable's value is positive, or "No" otherwise? if else if-else if-elseif-else
c
Which choice isnota valid call of the get_random_pair() method? def get_random_pair(): a = random.randint(0, 100) b = random.randint(0, 100) return a, b [x, y] = get_random_pair() (x, y) = get_random_pair() x y = get_random_pair() x, y = get_random_pair()
c
Which expression best determines if float variable x is 74.7? (AbsoluteValue(x) - 74.7) != 0.0001 (AbsoluteValue(x) - 74.7) > 0.0001 (AbsoluteValue(x) - 74.7) < 0.0001 (AbsoluteValue(x) - 74.7) == 0.0001
c
Which is true of the badly formatted code? x = input() if x == 'a': print('first') print('second') Both print() statements must be indented. Neither print() statement has to be indented. The first print() statement must be indented. The second print() statement can't be indented.
c
Which of the following loops is best implemented with a while loop? Checking to see if a list of integers contains the value 12. Counting how many keys in a dictionary start with the letter 'A'. Asking the user to enter positive integers, exiting by entering -1. Looping through the characters in a string, and displaying 'yes' if it contains a vowel.
c
Which of the following methods is an internal method that the user doesn't need to access? circumference() volume() _pi_value() surface_area()
c
Which statement correctly creates a new tuple west_cities with elements 'Vancouver', 'Portland', 'Eugene' in that order? west_cities = ['Vancouver', 'Portland', 'Eugene'] west_cities = ('Portland', 'Vancouver', 'Eugene') west_cities = ('Vancouver', 'Portland', 'Eugene') west_cities = ['Portland', 'Vancouver', 'Eugene']
c
Which statement is equivalent to the following? if x == 1: t = 'minute' else: t = 'minutes' t = 'minutes' if x == 1 else 'minute' t = 'minute' if x != 1 else 'minutes' t = 'minute' if x == 1 else 'minutes' t = 'minute' + ('s' if x == 1 else '')
c
Which uses the concat() function to output: red fish blue fish? def concat(*args): s = '' for item in args: s += ' ' + item return s print(concat(['red, blue'], 'fish')) print(concat(red), concat(fish), concat(blue), concat(fish)) print(concat('red', 'fish', 'blue', 'fish')) print(concat(red, fish, blue, fish))
c
Which scenario would make sense to implement a for loop? Computing the amount of caffeine in an input size cup of coffee Computing how many miles a car can drive with 10 gallons of gas Computing whether 10 numbers are even or odd Computing the number of pizzas to buy with an input number of people
c?
Complete the following code to get 'Email me at [email protected] or call at 333 222 1111' as output. email = 'Email: [email protected]' phone = 'Ph: 333-222-1111' print(f"Email me at {XXX} or call at {YYY}") XXX: email.split(' '), YYY: ' '.join((phone.split(': ' ))) XXX: email.split(' '), YYY: ' '.join((phone.split(': ' )[1])) XXX: email.split(' ')[0], YYY: ' '.join((phone.split(': ' )[0].split('-'))) XXX: email.split(' ')[1], YYY: ' '.join((phone.split(': ' )[1]).split('-'))
d
Considermy_string = 'roy came third in the running race'. Which option will return 'Roy came 3rd in the running race' as the value of new_string? new_string = my_string.title() new_string = new_string.replace('thi', '3') new_string = my_string[:3].title() new_string = new_string.replace('thi', '3') new_string = my_string.capitalize() new_string = new_string.replace('third', '3') new_string = my_string.capitalize() new_string = new_string.replace('thi', '3')
d
For what values of integer x will Branch 3 execute? If x < 10 : Branch 1 Else If x > 9: Branch 2 Else: Branch 3 Value 10 or larger Value 10 only Values between 9 and 10 For no values (never executes)
d
For what values of integer x will Branch 3 execute? If x < 10 : Branch 1 Else If x > 9: Branch 2 Else: Branch 3 Value 10 or larger Value 10 only Values between 9 and 10 For no values (never executes)
d
How many times does the following loop iterate? i = 0 while i <= 100: print(i) i = i + 2 0 49 50 51
d
How many times will the print statement execute? for i in range(10): for j in range(3): print(f'{i}. {j}') 3 10 13 30
d
Space, tab, and newline are all called _____ characters. noprint symbol space-line whitespace
d
The process of searching namespaces for a name is called _____. global search memory check variable lookup scope resolution
d
What is the error? cone_vol = cone_volume(2, 4) print(cone_vol) def compute_square(r): return r * r def cone_volume(r, h): return (0.33) * 3.14 * compute_square(r) * h No error, the program executes and outputs the correct value Undefined function compute_square() Undefined variable cone_vol() Undefined function cone_volume()
d
What is the finalvalue of z? grades = { 'A': 90, 'B': 80, 'C': 70, 'D': 60 } my_grade = 70 if my_grade not in grades: z = 1 else: z = 2 if 'F' in grades: z = z + 10 else: z = z + 20 11 12 21 22
d
What is the output? c1 = 'c' while c1 > 'a': for i in range(3): print(f'{c1}{i}', end=' ') c1 = chr(ord(c1) - 1) c1 c2 c3 b1 b2 b3 c2 c1 c0 b2 b1 b0 c0 c1 c2 b0 b1 b2 a0 a1 a2 c0 c1 c2 b0 b1 b2
d
What is the output? count = 0 while count < 3: print('loop') count = count + 1 print('final value of count:', count) Prints 'loop' once, then 'final value of count: 1' Prints 'loop' three times, then 'final value of count: 3' Prints 'loop' three times, then 'final value of count: 4' Prints 'loop' forever (infinite loop)
d
What is the output? for i in range(11): if i == 6: continue else: print(i, end=' ') 0 1 2 3 4 5 0 1 2 3 4 5 6 0 1 2 3 4 5 7 8 9 0 1 2 3 4 5 7 8 9 10
d
What is the output? num_list = [ 3, 8, 5, 15, 12, 32, 45 ] for index, value in enumerate(num_list): if index > 0: if value < num_list[index-1]: print('*', end='') print(value, end=' ') 3 8 5 15 12 32 45 *3 8 5 15 12 32 45 *3 *8 5 *15 12 *32 *45 3 8 *5 15 *12 32 45
d
What isoutput when the following code is executed? score = 65 group = '' if score <= 60: group = group + 'A' if score <= 70: group = group + 'B' if score <= 80: group = group + 'C' else: group = group + 'D' print(group) a) C b) D c) AB d) BC
d
What statement replaces XXX, causingthe program to print the word 'hello'? def print_hello(): print('hello') XXX alternate() print_hello(alternate) alternate() = print_hello() print_hello = alternate alternate = print_hello
d
Which XXX completes the program to count the number of input values to correctly guess the target? integer guess integer target integer count target = 42 guess = Get next input count = 1 while XXX guess = Get next input count = count + 1 Put "Got 42 after " to output Put count to output Put " guesses!" to output guess < target not(target) guess == target not(guess == target)
d
Which converts a programming language's source code into machine code? interpreter translator converter compiler
d
Which of the following is true? A function must have exactly one return statement, or no return statement at all. A function must always have at least one return statement. A function can only return strings and numbers, not lists or dictionaries. A function can have any number of return statements, or no return statement at all.
d
Which of the following symbols can be used as part of an identifier? @ $ & _ (underscore)
d
Which programming language is interpreted, dynamically typed, and object-oriented? C++ HTML Java Python
d
Which statement about Python istrue? Linux and Mac computers usually do not come with Python installed. There are no free web-based tools for learning Python. Windows usuallycomes with Python installed. Developersare not usually required to pay a fee to write a Python program.
d
A _____ is a word that is part of the Python language and can't be used as a variable name. keyword special token syntax symbol stylized word
a
Given the following function. To change the function to return the product instead of the sum, how many lines of code need to be changed? def calculate(a, b): return a + b print(calculate(3, 4)) print(calculate(5, 2)) print(calculate(6, 7)) 1 2 3 4
a
