Question

Using a conditional expression, write a statement that increments num_users if update_direction is 3; otherwise, decrements num_users. Sample output with inputs: 8 3.

a) num_users = num_users + 1 if update_direction == 3 else num_users - 1

b) num_users = num_users - 1 if update_direction == 3 else num_users + 1

c) num_users = num_users + 1 if update_direction != 3 else num_users - 1

d) num_users = num_users - 1 if update_direction != 3 else num_users + 1

Answer 1

To adjust the value of num_users based on update_direction, use the conditional expression: num_users = num_users + 1 if update_direction == 3 else num_users - 1.

Step-by-step explanation:

To increment num_users if update_direction is 3 and decrement num_users otherwise, you would use the following conditional expression:

num_users = num_users + 1 if update_direction == 3 else num_users - 1

This means that if update_direction equals 3, one will be added to num_users. If update_direction is anything other than 3, one will be subtracted from num_users. Thus, for the sample inputs 8 and 3, num_users would be incremented by 1.

The correct statement to increment num_users if update_direction is 3 is:

num_users = num_users + 1 if update_direction == 3 else num_users - 1

This conditional expression first checks if update_direction is equal to 3. If it is, then num_users is incremented by 1. If it is not, then num_users is decremented by 1.