Python Quiz: Module 5

List of Dictionaries

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1. Which of the following code snippets describe an ordered collection of data in Python?

   • A. ['d','a','f']
   • B. 'abc'
   • C. {'a','b','c'}
   • D. {'first_name':'Rudolph','last_name':'Reindeer','age':5}

2. Which of the following words is used to describe a collection?

   • A. Category
   • B. Cluster
   • C. Container
   • D. Cluster

3. Which code snipped can be used to access the letter s from a variable named level referencing the string basic?

   • A. level(3)
   • B. level[3]
   • C. level(2)
   • D. level[2]

4. What is the value of the variable output after running this code output = '1,2,3'.split(',')?

   • A. ('1', '2', '3')
   • B. ['1', '2', '3']
   • C. {'1', '2', '3'}
   • D. '123'

5. If you have a tupple named colors which contains ('white','red','green'), how do you access the color red from the tupple?

   • A. colors[1]
   • B. colors{1}
   • C. colors(1)
   • D. colors[2]

6. The following code describes the assignment of a dictionary to a variable: my_dict = {'day':'Tuesday','weather':'snow','temp':'32F'}. Which of the code snippets below can be used to convert the dictionary into 3 string variables: day_of_week,precipitation,temperature?

   • A. day_of_week,precipitation,temperature = my_dict
   • B. day_of_week,precipitation,temperature = my_dict[1,2,3]
   • C. day_of_week,precipitation,temperature = my_dict.split(',')
   • D. day_of_week,precipitation,temperature = my_dict.values()

7. After opening a CSV file with read mode, you read the data one row at time with for row in file.readlines():. You want to convert each row from a csv string terminated by a newline into a list of strings. Which code snippet can you use to convert the row from a string with a newline into a list of data strings.

   • A. row = row.split(',')
   • B. row = row.strip(',')
   • C. row = row.strip().split(',')
   • D. row = row.split(').strip()

8. If you want raise an exception when a user has chosen option 5, but you only support options 1-4, how will you code this?

   • A. raise FileNotFoundError("Enter a number between 1 and 4")
   • B. raise Exception("Enter a number between 1 and 4")
   • C. raise TypeError("Enter a number between 1 and 4")
   • D. raise ValueError("Enter a number between 1 and 4")

9. When will the code following except FileNotFoundError as e: be executed?

   • A. When the program tries to close a file that hasn't been opened.
   • B. When the program detects the user is trying close a file that they removed in code.
   • C. When the program attempts to close a file that is already closed.
   • D. When the program attempts to open a file using a path that doesn't exist.

10. What is the purpose of finally in Python exception handling?

    • A. Informs the user that the program is ending.
    • B. Only performs cleanup when an exception has been raised in a code block.
    • C. Perform cleanup such as closing files whether there are exceptions or not.
    • D. It clears all variable references.