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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Control Flow and Decision Making | 20% | - Comparisons and logical operators - If, elif, else statements - Conditional expressions |
| Topic 2: Functions and Modular Programming | 20% | - Defining and calling functions - Variable scope and code reuse - Parameters, arguments, and return values |
| Topic 3: Data Structures and Input/Output | 20% | - Lists, tuples, dictionaries, sets - Basic file handling - User input and output operations |
| Topic 4: Variables, Data Types, and Basic Operations | 20% | - Data types: integers, floats, strings, booleans - Variables and assignment - Arithmetic operations and type conversion |
| Topic 5: Loops and Iteration | 20% | - For loops and while loops - Break, continue, and pass statements - Iterating over sequences |
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NEW QUESTION # 10
A dictionary prices = { ' apple ' : 1.50, ' banana ' : 0.75, ' orange ' : 2.00} needs to have all values increased by
0.25. Which code correctly accomplishes this task?
Answer: A
Explanation:
In Python, iterating directly over a dictionary gives itskeys. In this dictionary, the keys are:
' apple '
' banana '
' orange '
To update each price, the program can loop through each key and use that key to access and change the corresponding value.
Correct code:
prices = { ' apple ' : 1.50, ' banana ' : 0.75, ' orange ' : 2.00}
for item in prices:
prices[item] = prices[ item] + 0.25
print(prices)
Output:
{ ' apple ' : 1.75, ' banana ' : 1.0, ' orange ' : 2.25}
Option B is incorrect because value actually receives each dictionary key, not each dictionary value. Also, assigning to value would not update the dictionary.
Option C is incorrect because item is not defined, and the loop structure is invalid for this task.
NEW QUESTION # 11
What happens when the command python is entered in a terminal without a filename?
Answer: A
Explanation:
When the command python is entered in a terminal without a filename, Python starts aninteractive Python session, also called interactive mode.
In interactive mode, Python displays the primary prompt:
> > >
The user can then type Python statements directly, such as:
> > > 2 + 3
5
The official Python documentation explains that when commands are read from a terminal, the interpreter is in interactive mode and prompts for the next command.
Python does not automatically run the most recent file, open a file browser, or necessarily display an error when started this way.
Therefore, the correct answer isC. An interactive Python session starts.
NEW QUESTION # 12
What must a developer do to run Python code written in a text editor?
Answer: D
Explanation:
When Python code is written in a text editor, the developer should save the file, usually with a .py extension, and run it using the Python interpreter.
Example terminal command:
python script.py
Python's documentation explains that a Python module is a file containing Python definitions and statements, usually saved with the .py suffix.
Therefore, the correct answer isA. Save the file and use a Python interpreter.
NEW QUESTION # 13
Which for loop correctly iterates through a list of student names?
Answer: B
Explanation:
The correct Python for loop syntax uses the keyword in.
Correct code:
for name in [ ' Alice ' , ' Bob ' , ' Carol ' ]:
print(name)
This loop processes each name in the list one at a time. Python's documentation explains that a for statement iterates over the items of a sequence or iterable.
Therefore, the correct answer isA. for name in [ ' Alice ' , ' Bob ' , ' Carol ' ]:.
NEW QUESTION # 14
Which keyword is used to exit a loop prematurely in Python?
Answer: B
Explanation:
The break keyword exits a loop immediately before the loop condition naturally becomes false or before all items have been processed.
Example:
for number in range(10):
if number == 5:
break
print(number)
When number becomes 5, the loop stops. Python's control-flow documentation explains the use of break in loops.
Therefore, the correct answer isB. break.
NEW QUESTION # 15
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