Question

1. what will be displayed by the following program? values = 2, 1, 7, 8 , 5, 9, 3, 4 for row in values: row.sort() for element in row: print(element, end = \ \) print() the program prints two rows: 1 2 7 8 followed by 3 4 5 9 the program prints two rows: 1 2 7 8 followed by 5 9 3 4 the program prints one row: 2 1 7 8 3 4 5 9 the program prints one row: 1 2 3 4 5 7 8 9 the program prints two rows: 2 1 7 8 followed by 5 9 3 4 5. variables defined in the global scope can be read outside and inside functions, but can only be modified outside of all functions. true false 6. what will happen if a program fails to close a file after reading it? nothing. closing a file does not really matter. you must restart your computer before it is usable again the file will be marked as busy and will be inaccessible until the program ends.

Explanation:

4.

Step1: Initialize list

The values is a 2 - D list [[2, 1, 7, 8], [5, 9, 3, 4]].

Step2: Outer loop

The outer for loop iterates over each row in values. For the first row [2, 1, 7, 8], the sort method sorts it in - place to [1, 2, 7, 8]. Then the inner for loop prints each element of this row with a space between them. After that, a new line is printed.

Step3: Second - row processing

For the second row [5, 9, 3, 4], the sort method sorts it in - place to [3, 4, 5, 9]. Then the inner for loop prints each element of this row with a space between them.

In Python, global variables can be read inside functions without any special syntax. To modify a global variable inside a function, the global keyword needs to be used. So they are not restricted to be modified only outside of all functions.

When a program reads a file and fails to close it, the file remains in an open state and is marked as busy. Other processes may not be able to access it until the program that has it open terminates.

Answer:

The program prints two rows: 1 2 7 8 followed by 3 4 5 9

5.