Programming 1 Exam 2

Which of these is associated with a specific file and provides a way for the program to work with that file?

• A file variable
• A file extension
• A file type
• A file object

Which mode specifier will erase the contents of a file if it already exists, and create it if it does not exist?

• 'r'
• 'w'
• 'a'
• 'b'

When a file has been opened using the ’r’ mode specifier, which method will return the file’s contents as a string?

• readline
• read
• input
• get

What would you use to remove the element of a list at a specific index?

• The index method
• The remove method
• the del statement
• the slice method

What would be the value of the variable a_list after the execution of the following code? a_list = [1, 2, 3, 4] a_list[3] = 10

• [1, 2, 10, 4]
• [10, 10, 10]
• [10, 10, 10, 4]
• [1, 2, 3, 10]

What method or operator can be used to concatenate lists?

• concat
• %
• *
• +

The primary difference between a tuple and list is:

• Once a tuple is created, it cannot be changed
• A tuple cannot include lists as elements
• A tuple can only include string elements
• When creating a tuple, you don’t use commas to separate elements

Which method can be used to convert a list to a tuple?

• insert
• list
• tuple
• append

In a dictionary, you use a(n) _________________________ to locate a specific value.

• element
• index
• key
• item

What is the correct way to create a dictionary that maps month numbers to month names?

• { 1, 2, 3 : ’January’, ’February’, ’March’ }
• { 1: ’January’, 2: ’February’, 3: ’March’ }
• { 1, ’January’, 2, ’February’, 3, ’March’ }
• [ 1: ’January’, 2: ’February’, 3: ’March’ ]