What Does the I in Bmw I3 Stand for

Python for Data Science, AI & Development

Final Exam Quiz Answers

Final Exam

Question 1)

When slicing in Python what does the "0" in this statement [0:2] specify ?

• It specifies the position to start the slice

Question 2)

If var = "01234567" what Python statement would print out only the odd elements ?

• print(var[1::2])

Question 3)

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

• Name.find("E")

Question 4)

What is the type of the following: 1.0

• float

Question 5)

What is the result of the following code segment: int(3.99)

• 3

Question 6)

What is the result of the following code segment:1/2 ?

• 0.5

Question 7)

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

• float

Question 8)

Dictionary items can be:

• Numerous data types

Question 9)

What is a tuple ?

• A collection that is ordered and unchangeable

Question 10)

What is the result of the following operation: '1:2,3:4'.split(':') ?

• ['1', '2,3', '4']

Question 11)

What is an important difference between lists and tuples ?

• Lists are mutable tuples are not

Question 12)

How do you cast the list A to the set a ?

• a=set(A)

Question 13)

If x=1 what will produce the below output ?

Hi

Mike

if(x!=1):

print('Hello')

 else:

    print('Hi')

 print('Mike')

Question 14)

What statement will execute the remaining code no matter the end result ?

• Finally

Question 15)

What add function would return '4' ?

• def add(x): return(x+x) add(2)

Question 16)

What method organizes the elements in a given list in a specific descending or ascending order ?

• sort()

Question 17)

What is the output for the below line of code ?

A=[8,5,2] for a in A: print(12-a)

•  4
•  7
•  10

Question 18)

What is the output of the following ?

 for i in range(1,5): if (i!=2): print(i)

• 1
• 3
• 4

Question 19)

What is the height of the rectangle in the class Rectangle ?

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()

• 3

Question 20)

What is the result of the following lines of code ?

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

• Division by zero error

Question 21)

What is the result of the following lines of code ?

 a=np.array([1,1,1,1,1]) a+10

• array([11, 11, 11, 11, 11])

Question 22)

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'

Question 23)

What is the method readline() used for?

• It helps to read one complete line from a given text file

Question 24)

Consider the following line of code:

 with open("Example.txt","a") as file1:

What mode is the file object in?

• append

Question 25)

What does URL stand for ?

• Uniform Resource Locator

Question 26)

When slicing in Python what does the "2" in this statement [0:2] specify ?

• It specifies the position to end the slice

Question 27)

Consider the string Name="ABCDE", what is the result of the following operation Name.find("B") ?

• 1

Question 28)

What is the type of the following: 1.0

• float

Question 29)

What following code segment would return a 3 ?

• int(3.99)

Question 30)

When using the double slash "//" for integer division the result will be ?

• Rounded

Question 31)

In Python 3 what does regular division always result in ?

• Float

Question 32)

Whatdata type must have unique keys ?

• Dictionary

Question 33)

What is the syntax to obtain the first element of the tuple ?

A=('a','b','c')

• A[0]

Question 34)

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

• The list of words in a string separated by a delimiter

Question 35)

What is an important difference between lists and tuples ?

• Lists are mutable tuples are not

Question 36)

What code segment is used to cast list "B" to the set "b" ?

• b=set(B)

Question 37)

What code segment would output the following ?

• for i in range(1,5): if (i!=1): print(i)

Question 38)

What is the result of the following lines of code ?

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

• array([0, 0, 0, 0, 0])

Question 39)

What is the result of the following lines of code ?

a=np.array([10,9,8,7,6]) a+1

• array([11,10,9,8,7])

Question 40)

How would you select the columns with the headers: Artist, Length and Genre from the dataframe df and assign them to the variable y ?

• y=df[['Artist','Length','Genre']]

Question 41)

Consider the file object: File1.What would the following line of code output?

file1.readline(4)

• It would output the first 4 characters from the text file

Question 42)

Which line of code is in the mode of append ?

• with open("Example.txt","a") as file1:

Question 43)

In Python what statement would print out the first two elements "Li" of "Lizz" ?

• print(name[0:2])

Question 44)

In Python, if you executed var = '01234567', what would be the result of print(var[::2]) ?

• 0246

Question 45)

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

• Name.find("E")

Question 46)

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

• int

Question 47)

What following code segment would produce an output of "0.5" ?

• 1/2

Question 48)

In Python 3 what does regular division always result in ?

• Float

Question 49)

What does the index of "1" correspond to in a list or tuple ?

• The second element

Question 50)

Given the function add shown below, what does the following return ?

 def add(x): return(x+x) add('1')

• '11'

Question 51)

What function returns a sorted list ?

• sorted()

Question 52)

What segment of code would output the following ?

11

22

33

• A=['1','2','3'] for a in A: print(2*a)

Question 53)

What line of code would produce the following: array([11, 11, 11, 11, 11]) ?

• a=np.array([1,1,1,1,1]) a+10

Question 54)

In Python what data type is used to represent text and not numbers ?

• str

Question 55)

Whatdata type must have unique keys ?

• Dictionary

Question 56)

Lists are:

• Mutable

Question 57)

What is the process of forcing your program to output an error message when it encounters an issue ?

• Exception handling

Question 58)

A list cannot be sorted if it contains:

• strings and numeric values

Question 59)

What is the method defined in the class Rectangle used to draw the rectangle?

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()

• drawRectangle

Question 60)

What is the result of the following lines of code ?

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

• array([1, 1, 1, 1, 1])

Question 61)

What mode over writes existing text in a file ?

• Write "w"

Question 62)

If var = "01234567" what Python statement would print out only the even elements?

• print(var[::2])

Question 63)

In Python 3 what following code segment will produce a float ?

• 1/2

Question 64)

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

• The first element of a list or tuple

Question 65)

What line of code would produce this output: ['1','2','3','4'] ?

• '1,2,3,4'.split(',')

Question 66)

What is an error that occurs during the execution of code ?

• Exception

Question 67)

What add function would return '2' ?

• def add(x): return(x+x) add(1)

Question 68)

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

 A=['1','2','3'] for a in A: print(2*a)

• 11
• 22
• 33

Question 69)

What code segment would output the following ?

2

• for i in range(1,5): if (i==2): print(i)

Question 70)

What is the width of the rectangle in the class Rectangle?

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()

• 2

Question 71)

What is the result of the following lines of code ?

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

• array([1, 1, 1, 1, 1])

What Does the I in Bmw I3 Stand for

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