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Section 5.22 Functions and Strings Multiple Choice Questions

Checkpoint 5.22.1.

Q-1: Given the below code snippet, which of the following options would create a variable called final_string that is assigned to the word “yelling”? 
string1 = "yellow"
string2 = "screaming"
  • final_string = string1[:4] + string2[-3:]
  • Correct! Using the slice operator [start:end], the starting index is inclusive, while the ending index is exclusive.
  • final_string = string1[:4] + string2[6:]
  • Correct! Using the slice operator [start:end], the starting index is inclusive, while the ending index is exclusive.
  • final_string = string1[:3] + string2[6:]
  • Try again! This would assign final_string to "yeling".
  • final_string = string1[:3] + string2[6:-1]
  • Try again! This would assign final_string to "yelin".
  • final_string = string1[:4].append(string2[-3:])
  • Try again! String objects do not have the attribute "append".

Checkpoint 5.22.2.

Q-2: Which of the following choices correctly prints a sentence using the variable num_of_apples? 
num_of_apples = 4
  • print("I have " + num_of_apples + " apples.")
  • Try again! You can’t concatenate a string and an integer together.
  • print("I have " + str("num_of_apples") + " apples.")
  • Try again! Do not enclose the variable name in a string or you will get just those characters.
  • print("I have 4 apples.")
  • Try again! This doesn’t use the variable num_of_apples.
  • print("I have " + str(num_of_apples) + " apples.")
  • Correct! By using str, the integer variable is converted into a string.

Checkpoint 5.22.3.

Q-3: Which of the following are string methods?
  • split()
  • Correct!
  • lower()
  • Correct!
  • append()
  • Try again! This is a list method, not a string method.
  • startswith()
  • Correct!
  • sort()
  • Try again! This is a list method, not a string method.

Checkpoint 5.22.4.

Q-4: Which of the following code corresponds to the amount of characters in the following string variable? 
string = "I love coding!"
  • count(string)
  • Try again! Count is a python string method that counts the amount of occurrences of a substring.
  • len(string)
  • Correct!
  • int(string)
  • Try again! String with words cannot be converted to ints.
  • length(string)
  • Try again! Instead of length, it should be len, because length is not a built-in python function.

Checkpoint 5.22.5.

Q-5: What does the following code output? 
def abbrev(first_name, last_name):
   print(first_name[0:1] + ". " + last_name.lower())

abbrev("Joanne", "Weathers")
  • J. Weathers
  • Try again! The first letter in the last name should be lowercase.
  • Jo. Weathers
  • Try again! The end of a slice operator is exclusive (e.g., 1 is exclusive in this example).
  • oa. Weathers
  • Try again! Strings are indexed starting at 0.
  • J. weathers
  • Correct!
  • j. weathers
  • Try again! Only the last name should be lowercase.

Checkpoint 5.22.6.

Q-6: After running this code, what would be the output if the input was first_name = "Katie" and last_name = "perkins"? 
def abbrev():
   first_name = input("What is your first name? ")
   last_name = input("What is your last name? ")
   return("Hello " + first_name + last_name[0:2].capitalize() + ". ")

def main():
   abbrev()

main()
  • Hello KatiePe.
  • Try again! This would be correct if there was a print statement.
  • Nothing.
  • Correct! Nothing would be outputted because there is no print statement.
  • Hello Katie Pe.
  • Try again! There shouldn’t be a space between the first and last name.
  • Hello KatiePE.
  • Try again! The E should not be capitalized. The upper() method would capitalize the E, but not the capitalize() method.

Checkpoint 5.22.7.

Q-7: Given the variable item, how would you grab the letters “tebo”? 
def notebook():
   item = "notebook"
   # What goes here?

notebook()
  • print(item[2:7])
  • Try again! This would print "teboo".
  • print(item[2:6])
  • Correct!
  • print(item[-6:-2])
  • Correct!
  • print(item[3] + item[4] + item[5] + item[6])
  • Try again! This would print "eboo".
  • print(item[3:7])
  • Try again! This would print "eboo".
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