Consider the Following Code Which Would Set the Hour of a Time

question 37

Multiple Choice

Consider the following code which would set the hour of a Time object to an invalid value. wake_up._hour = 100
Which of the following statements is false?

• A) Rather than _hour, we can name the attribute __hour with two leading underscores. This convention indicates that __hour is "private" and should not be accessible to the class's xe "client of a class"clients.
• B) To help prevent clients from accessing "private" attributes, Python renames them by preceding the attribute name with _ClassName, as in _Time__hour. This is called xe "name mangling"name mangling.
• C) If you try to assign to __hour, as in
• Wake_up.__hour = 100
• Python raises a ValueError, indicating that the class does not have an __hour attribute.
• D) IPython does not show attributes with one or two leading underscores when you try to auto-complete an expression like
• Wake_up.
• By pressing Tab. Only attributes that are part of the wake_up object's "public" interface are displayed in the IPython auto-completion list.

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Definitions:

FIFO

"First In, First Out," an inventory valuation method assuming that the first items purchased are the first ones sold, affecting the cost of goods sold and ending inventory value.

Specific Identification

An accounting method used for inventory costing, where each item in inventory is identified and its cost is individually recorded.

LIFO

"Last In, First Out," a method of inventory valuation where the most recently produced or acquired items are the first to be expensed.

Average Cost

A method of inventory valuation which calculates the cost of goods sold and ending inventory based on the average cost of all similar items in inventory.