Quiz

📌 What is the result of the following operation:

11//2

• 5.5
• 5

📌 What is the value of x after the following is run:

x=4
x=x/2 

• 4.0
• 2.0

📌 What is the output of the following:

print("AB\nC\nDE")

• ABC
  DE
• AB
  CD
  E
• AB
  C
  DE

📌 What is the result of following?
If you are unsure, copy and paste the code into Jupyter Notebook and check.

"hello Mike".find("Mike") 

• 6
• 6, 7, 8
• 5

📌 What is the value of x after the following lines of code?

x=2
x=x+2

• 4
• 2

📌 What is the result of the following operation:

3+2*2

• 3
• 7
• 9

📌 What is the result of the following code segment:

type(int(12.3))

• int
• str
• float

📌 What is the result of the following code segment:

int(False)

• 1
• 0
• error

📌 In Python, what is the result of the following operation:

'1'+'2'

• 3
• ‘3’
• ‘12’

📌 Given myvar = 'hello', how would you return myvar as uppercase?

• len(myvar)
• myvar.find(‘hello’)
• myvar.upper()

📌 What is the result of the following:

str(1)+str(1)

• ‘11’
• 2

📌 What is the result of the following:

"ABC".replace("AB", "ab")

• ‘abC’
• ‘ABc’

📌 In Python 3, what is the type of the variable x after the following:

x=2/2

• float
• int

📌 Consider the following tuple:

say_what=('say',' what', 'you', 'will') 

what is the result of the following say_what[-1]

• ‘will’
• ‘say’
• ’ what’
• ‘you’

📌 Consider the following tuple A=(1,2,3,4,5). What is the result of the following:

A[1:4]

• (3, 4,5)
• (2, 3, 4,5)
• (2, 3, 4)

📌 Consider the following tuple A=(1,2,3,4,5), what is the result of the following:

len(A)

• 6
• 5
• 4

📌 Consider the following list B=[1,2,[3,'a'],[4,'b']], what is the result of the following:

B[3][1]

• “c”
• [4,“b”]
• “b”

📌 What is the result of the following operation?

[1,2,3]+[1,1,1]

• TypeError
• [1, 2, 3, 1, 1, 1]
• [2,3,4]

📌 What is the length of the list A = [1] after the following operation:

A.append([2,3,4,5])

• 2
• 6
• 5

📌 What is the result of the following:

"Hello Mike".split()

• [“H”]
• [“HelloMike”]
• [“Hello”,“Mike”]

📌 What are the keys of the following dictionary:

{"a":1,"b":2}

• 1,2
• “a”,“b”

📌 Consider the following Python Dictionary: Dict={"A":1,"B":"2","C":[3,3,3],"D":(4,4,4),'E':5,'F':6} What is the result of the following operation:

Dict["D"]

• (4, 4, 4)
• [3,3,3]
• 1

📌 Consider the following set: {"A","A"}, what will the result be when the set is created?

• {“A”}
• {“A”,“A”}

📌 What is the result of the following:

type(set([1,2,3]))

• set
• list

📌 What method do you use to add an element to a set?

• append
• add
• Extend

📌 What is the result of the following operation:

{'a', 'b'} &{'a'}

• {‘a’, ‘b’}
• {‘a’}

📌 Consider the tuple A=((11,12),[21,22]), that contains a tuple and list. What is the result of the following operation

A[1]

• ((11,12),[21,22])
• (11,12)
• [21,22]

📌 Consider the tuple A=((1),[2,3],[4]), that contains a tuple and list. What is the result of the following operation

A[2][0]

• 4
• [4]
• 1

📌 True or false: after applying the following method, L.append(['a','b']), the following list will only be one element longer.

• True
• False

📌 Consider the following list A=["hard rock", 10, 1.2] What will list A contain affter the following command is run:

del(A[1])

• [10,1.2]
• [“hard rock”,1.2]
• [“hard rock”,10]

📌 What is the syntax to clone the list A and assign the result to list B ?

• B=A
• B=A[:]

📌 Consider the following dictionary:

{ "The Bodyguard":"1992", "Saturday Night Fever":"1977"}

select the values:

• “1977”
• “1992”
• “The Bodyguard”
• “Saturday Night Fever”

📌 The variable release_year_dict is a Python Dictionary, what is the result of applying the following method:

release_year_dict.values()

• retrieve the keys of the dictionary
• retrieves, the values of the dictionary

📌 Consider the Set: V={'A','B'}, what is the result of V.add('C')?

• {‘A’,‘B’,‘C’}
• {‘A’,‘B’}
• error

📌 What is the result of the following:

'1' in {'1','2'}

• False
• True

📌 what is the result of the following:

1=2

• SyntaxError:can’t assign to literal
• False
• True

📌 What is the output of the following code segment:

i=6
i<5 

• True

• False

• SyntaxError: can’t assign to literal

📌 What is the result of the following:

5!=5

• False
• True

📌 What is the output of the following code segment:

'a'=='A'

• False
• True

📌 in the video, if age=18 what would be the result

• move on
• you can enter

📌 in the video what would be the result if we set the variable age as follows:

age= -10

• go see Meat Loaf
  move on
• you can enter
  move on

📌 what is the result of the following: True or False

• True, an or statement is only False if all the Boolean values are False
• False

📌 what will be the output of the following:

for x in range(0,3):     
    print(x) 

• 0
  1
  2
• 0
  1
  2
  3

📌 what is the output of the following:

for x in ['A','B','C']:
    print(x+'A') 

• AA
  BA
  CA
• A
  B
  C

📌 what is the output of the following:

for i, x in enumerate(['A','B','C']):    
    print(i, x) 

• 0 A
  1 B
  2 C
• AA
  BB
  CC

📌 What does the following function return:

len(['A','B',1])

• 3
• 2
• 4

📌 What does the following function return:

len([sum([0,0,1])])

• 1
• 0
• 3

📌 What is the value of list L after the following code segment is run :

L=[1,3,2]
sorted(L) 

• L:[1,3,2]
• L:[1,2,3]
• L:[0,0,0]

📌 From the video what is the value of c after the following:

c=add1(2)
c=add1(10) 

• 3

• 11

• 14

📌 what is the output of the following lines of code:

def Print(A):   
    for a in A: 
        print(a+'1')

Print(['a','b','c']) 

• a
  b
  c
• a1
  b1
  C1
• a1

📌 Why do we use exception handlers?

• Catch errors within a program
• Read a file
• Write a file
• Terminate a program

📌 What is the purpose of a try…except statement?

• Executes the code block only if a certain condition exists
• Crash a program when errors occur
• Catch and handle exceptions when an error occurs
• Only executes if one condition is true

📌 What is the type of the following?

["a"] 

• str

• list

📌 What does a method do to an object?

• Changes or interacts with the object
• Returns a new values

📌 We create the object:

Circle(3,'blue')

What is the color attribute set to?

• 2
• ‘blue’

📌 What is the radius attribute after the following code block is run?

RedCircle=Circle(10,'red')
RedCircle.radius=1 

• 10
• 1
• ‘red’

📌 What is the radius attribute after the following code block is run?

BlueCircle=Circle(10,'blue')
BlueCircle.add_radius(20) 

• 10
• 20
• 30

📌 What is the output of the following code?

x="Go"
if(x=="Go"):
  print('Go ')
else:
  print('Stop')
print('Mike')

• Go Mike
• Mike
• Stop Mike

📌 What is the result of the following lines of code?

x=1
x>-5

• True
• False

📌 What is the output of the following few lines of code?

x=5
while(x!=2):
  print(x)
  x=x-1

• 5
  4
  3
• 5
  4
  3
  2
• the program will never leave the loop

📌 What is the result of running the following lines of code ?

class Points(object):
    def __init__(self,x,y):
        self.x=x
        self.y=y
    def print_point(self):
        print('x=',self.x,' y=',self.y)

p1=Points(1,2)
p1.print_point()

• x=1;

• x=1 y=2

• y=2

📌 What is the output of the following few lines of code?

for i,x in enumerate(['A','B','C']):
    print(i+1,x)

• 1 A
  2 B
  3 C
• 0 A
  1 B
  2 C
  
• 0 AA
  1 BB
  2 CC

📌 What is the result of running the following lines of code ?

class Points(object):
    def __init__(self,x,y):
        self.x=x
        self.y=y
    def print_point(self):
        print('x=',self.x,' y=',self.y)

p2=Points(1,2)
p2.x=2
p2.print_point()

• x=2 y=2
• x=1 y=2
• x=1 y=1

📌 Consider the function delta, when will the function return a value of 1?

def delta(x):
    if x==0:
        y=1
    else:
        y=0
    return(y)

• When the input is anything but 0
• When the input is 1
• Never
• When the input is 0

📌 What is the output of the following lines of code?

a=1

def do(x):
    a=100
    return(x+a)

print(do(1))

• 2
• 101
• 102

📌 Write a function name add that takes two parameter a and b, then return the output of a + b (Do not use any other variable! You do not need to run it. Only write the code about how you define it.)

def add(a, b):
    return a + b

📌 Why is it best practice to have multiple except statements with each type of error labeled correctly?

• Ensure the error is caught so the program will terminate
• In order to know what type of error was thrown and the location within the program
• To skip over certain blocks of code during execution
• It is not necessary to label errors

📌 What are the most common modes used when opening a file?

• (a)ppend, (r)ead, (w)rite
• (a)ppend, (c)lose, (w)rite
• (a)ppend, (r)edline, (w)rite
• (s)ave, (r)ead, (w)rite

📌 What is the data attribute that will return the title of the file?

• File1.close()
• File1.mode
• File1.open()
• File1.name

📌 What is the command that tells Python to begin a new line?

• \e
• \b
• \q
• \n

📌 What attribute is used to input data into a file?

• File1.write()
• File1.open()
• File1.close()
• File1.read()

📌 What python object do you cast to a dataframe?

• set
• tuple
• Dictionary

📌 How would you access the first-row and first column in the dataframe df?

• df.ix[0,0]
• df.ix[0,1]
• df.ix[1,0]

📌 What is the proper way to load a CSV file using pandas?

• pandas.from_csv(‘data.csv’)
• pandas.load_csv(‘data.csv’)
• pandas.read_csv(‘data.csv’)
• pandas.import_csv(‘data.csv’)

📌 What is the Python library used for scientific computing and is a basis for Pandas?

• Tkinter
• Requests
• datetime
• Numpy

📌 What attribute is used to retrieve the number of elements in an array?

• a.size
• a.ndim
• a.shape
• a.dtype

📌 How would you change the first element to “10” in this array c:array([100,1,2,3,0])?

• c[2]=10
• c[1]=10
• c[0]=10
• c[4]=10

📌 What attribute is used to return the number of dimensions in an array?

• a.ndim

• a.shape

• a.dtype

• a.size

📌 What is the result of the following lines of code?

a=np.array([0,1])
b=np.array([1,0])
np.dot(a,b) 

• 0
• 1
• array([1,1])

📌 How do you perform matrix multiplication on the numpy arrays A and B ?

• AB
• A+B
• np.dot(A,B)

📌 What values does the variable out take if the following lines of code are run?

X=np.array([[1,0,1],[2,2,2]]) 
out=X[0,1:3]
out

• array([2,2])
• array([1,0,1])
• array([0,1])

📌 What is the value of Z after the following code is run?

X=np.array([[1,0],[0,1]])
Y=np.array([[2,1],[1,2]]) 
Z=np.dot(X,Y)

• array([[2,1],[1,2]])
• array([[2,0],[1,0]])
• array([[3,1],[1,3] ])

📌 Consider the following text file: Example1.txt: This is line 1 This is line 2 This is line 3 What is the output of the following lines of code?

with open("Example1.txt","r") as file1:
  
    FileContent=file1.read()
    
    print(FileContent)

• This is line 1

This is line 2 This is line 3

• This is line 1
• This

📌 Consider the following line of code:

with open(example1,"r") as file1:

What mode is the file object in?

• read
• write
• append

📌 What do the following lines of code do?

with open("Example.txt","w") as writefile:  
 writefile.write("This is line A\n")
 writefile.write("This is line B\n")

• Read the file “Example.txt”
• Write to the file “Example.txt”
• Append the file “Example.txt”

📌 Consider the dataframe df. How would you access the element in the 2nd row and 1st column?

• df.iloc[1,0]
• df.iloc[2,1]
• df.iloc[0,1]

📌 In the lab, you learned you can also obtain a series from a dataframe df, select the correct way to assign the column with the header Length to a pandas series to the variable x.

• x=df[‘Length’]
• x=df[[‘Length’]]
• x=df.[[‘Length’]]

📌 What does API stand for?

• Application Programming Interaction
• Application Programming Interface
• Automatic Program Interaction
• Application Process Interface

📌 The chart used to plot the cryptocurrency data in the lab is a

• Candlestick Chart
• Line Chart
• Pole Chart
• Point and Figure Chart

📌 What information are we trying to find for each day in the lab for the chart?

• Open (Last), High (Max), Low (Min), Close (First)
• Open (Max), High (First), Low (Last), Close (Min)
• Open (First), High (Max), Low (Min), Close (Last)
• Open (Min), High (First), Low (Max), Close (Last)

📌 What is the function of “GET” in HTTP requests?

• Deletes a specific resource
• Sends data to create or update a resource
• Carries the request to the client from the requestor
• Returns the response from the client to the requestor

📌 What does URL stand for?

• Uniform Request Location
• Uniform Resource Locator
• Unilateral Resistance Locator
• Uniform Resource Learning

📌 What does the file extension “csv” stand for?

• Comma Separated Values
• Comma Separation Valuations
• Common Separated Variables
• Comma Serrated Values

📌 What is webscraping?

• The process to extract data from a particular website
• The process to display all data within a URL
• The process to describe communication options
• The process to request and retrieve information from a client

📌 What are the 3 parts to a response message?

• Start or status line, header, and body
• Encoding, body, and cache
• Bookmarks, history, and security
• HTTP headers, blank line, and body

📌 What is the purpose of this line of code "table_row=table.find_all(name=’tr’)" used in webscraping?

• It will find all of the data within the table marked with a tag “p”
• It will find all of the data within the table marked with a tag “a”
• It will find all of the data within the table marked with a tag “h1”
• It will find all of the data within the table marked with a tag “tr”

📌 In what data structure do HTTP responses generally return?

• Tuples
• Nested Lists
• JSON
• Lists

📌 The Python library we used to plot the chart in the lab is

• Pandas
• MatPlotLib
• Plotly
• PyCoinGecko

Final Quiz

📌 In Python what statement would print out the first two elements “Li” of “Lizz”?

• print(name[1:2])
• print(name[0:2])
• print(name[2:0])

📌 If var = “01234567” what Python statement would print out only the odd elements?

• print(var[2::2])
• print(var[1::2])
• print(var[3::1])

📌 Consider the string Name=”EMILY”, what statement would return the index of 0?

• Name.find(“I”)
• Name.find(“L”)
• Name.find(“E”)

📌 In Python what can be either a positive or negative number but does not contain a decimal point?

• str
• int
• float

📌 What following code segment would return a 3?

• int(3.99)
• str(3.99)
• float(3.99)

📌 What following code segment would produce an output of “0”?

• 1//2
• 1/2

📌 In Python 3, what is the type of the variable x after the following: x=2/2 ?

• int
• float

📌 Whatdata type must have unique keys?

• Tuple
• Dictionary
• List

📌 What will this code segment “A[0]” obtain from a list or tuple?

• The first element of a list or tuple
• The third element of a list or tuple
• The second element of a list or tuple

📌 What does the split() method return from a list of words?

• The list of words in a string separated by a delimiter
• The list of words in reverse order
• The list of words separated by a colon
• The list in one long string

📌 Tuples are:

• Not mutable
• Unordered
• Not indexed
• Mutable

📌 What is a collection that is unordered, unindexed and does not allow duplicate members?

• Set
• List
• Tuple

📌 What value of x will produce the following output? How are you?

x= 
if(x!=1): 
 print('How are you?') 
else: 
 print('Hi')

• x=“7”
• x=1
• x=6

📌 Why is the “finally” statement used?

• Execute the remaining code no matter the end result
• Only execute the remaining code if one condition is false
• Only execute the remaining code if no errors occur
• Only execute the remaining code if an error occurs

📌 Given the function add shown below, what does the following return? def add(x): return(x+x) add(‘1’)

• ‘2’
• 2
• ‘11’

📌 What function returns a sorted list?

• sorted()
• lower()
• find()
• sort()

📌 What is the output of the following few lines of code? A=[‘1’,‘2’,‘3’] for a in A: print(2*a)

• 2
  4
  6
• error: cannot multiply a string by an integer
• 11
  22
  33

📌 What is the output of the following? for i in range(1,5): if (i!=2): print(i)

• 1
  3
  4
• 2
• 1
  2
  3
  4

📌 Consider the class Rectangle, what are the data attributes?

class Rectangle(object):
    def __init__(self,width=2,height =3,color='r'):
        self.height=height
        self.width=width
        self.color=color
        
    def drawRectangle(self):
        import matplotlib.pyplot as plt
        
        plt.gca().add_patch(plt.Rectangle((0, 0), self.width, self.height, fc=self.color))
        plt.axis('scaled')
        plt.show() 

• self.height, self.width,self.color
• drawRectangle
• init

📌 What line of code would produce the following: array([0, 0, 0, 0, 0]) ?

• a=np.array([0,1,0,1,0]) b=np.array([1,0,1,0,1]) a-b
• a=np.array([0,1,0,1,0]) b=np.array([1,0,1,0,1]) a*b
• a=np.array([0,1,0,1,0]) b=np.array([1,0,1,0,1]) a+b

📌 What is the result of the following lines of code?

a=np.array([1,1,1,1,1]) a+10

• array([1,1,1,1,1])
• array([10,10,10,10,10])
• array([11, 11, 11, 11, 11])

📌 The following line of code selects the columns along with what headers from the dataframe df?

y=df[['Artist','Length','Genre']]

• ‘Artist’, ‘Length’ and ‘Genre’
• This line of code does not select the headers
• ‘Artist’, ‘Length’ and ‘y’

📌 What is the method readline() used for?

• It helps to read one complete line from a given text file
• It reads the entire file all at once
• It reads 10 lines of a file at a time

📌 What mode over writes existing text in a file?

• Write “w”
• Read “r”
• Append “a”

📌 What are the 3 parts to a URL?

• Put, route, and get
• Scheme, internet address, and route
• Get, post, and scheme
• Block, post, and route