Python for Data Science, AI & Development Quiz Answers

Python for Data Science, AI & Development Week 01 Quiz Answers

Quiz : Module 1 Graded Quiz Answers

Q1. What is the value of x after the following lines of code?

x=2

x=x+2

Q2. What is the result of the following operation 3+2*2 ?

Q3. What is the type of the following “7.1”

float
string

Q4. What is the result of the following code segment: int(True)

1
0
error

Q5. In Python, what is the result of the following operation: ‘1’+’2′ ?

3
‘3’
’12’

Q6. Given myvar = ‘hello’ , how would you return myvar as uppercase?

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

Q7. What is the result of the following : str(1+1) ?

‘2’
’11’

Q8. What is the result of the following: “ABC”.replace(“AB”, “ab”) ?

‘abC’
‘ABc’

Q9. In Python 3, what is the type of the variable x after the following: x=1/1 ?

float
int

Python for Data Science, AI & Development Week 02 Quiz Answers

Quiz : Module 2 Graded Quiz Answers

Q1. 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])

Q2. 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

Q3. The method append does the following:

adds one element to a list
merges two lists or insert multiple elements to a list

Q4. 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]

Q5. If A is a list what does the following syntax do: B=A[:] ?

assigns list A to list B
variable B references a new copy or clone of the original list A

Q6. What is the result of the following: len((“disco”,10,1.2, “hard rock”,10)) ?

Q7. Consider the following dictionary:

{ “The Bodyguard”:”1992″, “Saturday Night Fever”:”1977″}

select the values

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

Q8. The variable release_year_dict is a Python Dictionary, what is the result of applying the following method: release_year_dict.keys() ?

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

Q9. Consider the Set: V={‘A’,’B’}, what is the result of V.add(‘C’)?

{‘A’,’B’,’C’}
error
{‘A’,’B’}

Q10. What is the result of the following: ‘1’ in {‘1′,’2’} ?

False
True

Python for Data Science, AI & Development Week 03 Quiz Answers

Quiz : Module 3 Graded Quiz Answers

Q1. 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

Q2. What is the result of the following lines of code?

x=1
x>-5

True
False

Q3. What is the output of the following few lines of code?

x=0
while(x<2):
    print(x)
    x=x+1

Q4. 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

Q5. What is the output of the following few lines of code?

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

0 A
1 B
2 C

0 AA
1 BB
2 CC

Q6. 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='A'

p2.print_point()

x= 1 y=2
x= A y=2
x=A, y=B

Q7. Consider the function step, when will the function return a value of 1?

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

if x is larger than 0
if x is equal to or less then zero
if x is less than zero

Q8. 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

Python for Data Science, AI & Development Week 04 Quiz Answers

Quiz : Module 4 Graded Quiz Answers

Q1. 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])

Q2. What is the value of Z after the following code is run?

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

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

Q3. 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[0:2,2]
out

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

Q4. What is the value of Z after the following code is run?

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

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

Q5. 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

Q6. What do the following lines of code do?

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

  print(FileContent)

Read the file “Example1.txt”
Write to the file “Example1.txt”
Append the file “Example1.txt”

Q7. What do the following lines of code do?

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

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

Q8. What task do the following lines of code perform?

with open('Example2.txt','r') as readfile:
    with open('Example3.txt','w') as writefile:
          for line in readfile:
                writefile.write(line)