Python 3

You have the following code:

y=2

x=0

while x*Y < 8:

if x == 3:

pass

while x < 2:

x = x+1

x +=1

What will be the value of x?

• 6

• 5

• 7

• 4

You have the following code:

n= 4

x = 1

You need to print out a multiplication table for 4 X 1 through 4 X 10, with each output on a separate line.

The first output should be : 4 X 1 = 4

The last output should be : 4 X 10 = 40

Which code segment should you use?

• while x < 11:

  print(str(n) + 'x' + str(x) + ' = ' + str(n*x))

  x +=1

• while x <= 11:

  print(str(n) + 'x' + str(x) + ' = ' + str(n*x))

  x +=1

• while x <11:

  print(str(n) + 'x' + str(x) + ' = ' + (n*x))

  x += 1

• while x < 11:

  print(str(n) + 'x' + str(x) + ' = ' + str(n*x))

  x += 1

You have the following code:

n = 2

x = 7

for i in range (5,x):

while i < 6:

n = n +1

if n == 2:

pass

else:

n += 1

i += 1

What will be the value of n?

• 5

• 6

• 7

• 4

You need to write the following list to a CSV file:

students = [["Mark", "A"], ["Bryan", "B"], ["Lisa", "B"], ["Jessica", "C"],["Tim", "A"]]

Which code segment should you use?

• import csv

  with open("students.csv", "w", newline="") as f:

  f.writerows(students)

• import csv

  with open("students.csv", "w", newline="") as f:

  writer = csv.writer(f)

  writer.writerows(students)

• import csv

  with open("students.csv", "w", newline="") as f:

  writer = csv.writer(f)

  writer.write(students)

• import csv

  with open("students.csv", "wb", newline="") as f:

  writer = csv.writer(f)

  writer.writerows(students)

You have the following snippet:

import pickle

course_count = [["C++", "24"], ["Java", "32"], ["Python", "38"], ["JavaScript", "29"], ["C#", "40"]]

# add missing code here

with open("languages.bin", "rb") as f:

course_count2 = pickle.load(f)

print(course_count2)

You need to add the missing code to write the list to a binary file.

Which code fragment should you use?

• with open("languages.bin", "wb") as f:

  pickle.write(course_count, f)

• with open("languages.bin", "wb" as f:

  writer = pickle.writer(f)

  writer.dump(course_count)

• with open("languages.bin", "wb") as f:

  pickle.dump(course_count, f)

• with open("languages.bin", "b") as f:

  pickle.dump(course_count, f)

You need to write some contents to a file named file_name that will be in the following format:

Hello World!

Which code segment should you use?

• f = open('file_name')

  f.write('Hello World!')

  f.close()

• f = open('file_name', 'w')

  f.write('Hello World!')

  f.close()

• f = open('file_name', 'r')

  f.write('Hello World!')

  f.close()

• f = open('file_name', 'b')

  f.write('Hello World!')

  f.close()

You have a file named studentfile with the following content:

Dave, 100, 90, 77

Sam, 55, 90, 80

You need to write code to read all of the contents of the file.

Which code segment should you use?

• with open('studentfile') as f:

  file_data = f.read()

• with open('studentfile', 'r') f:

  file_data = f.read()

• with open('studentfile', 'w') as f:

  file_data = f.read()

• with open('studentfile') as f:

  file_data = f.readline()

You have a file named VotingData.txt. You need to open the file for writing in binary format only.

Which code segment should you use?

• f = open('VotingData.txt', 'w')

• f = open('VotingData.txt', 'w+')

• f = open('VotingData.txt', 'wb')

• f = open('VotingData.txt', 'wb+')

You need to complete the code segment so that it will open a file named PurchaseOrders.txt and write new records and read all of the file contents into the variable named data.

Which line of code should you use?

with open('PurchaseOrders.txt', 'w+') as f:

f.write('some data\n')

?

data = f.read()

• f.seek(0)

• f.seek(2)

• f.flush()

• f.close()

When using format(), strings are right-aligned by default.

• True

• False