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| Section | Objectives |
|---|---|
| Functions | - Recursion - Function Definition and Call - Parameters and Arguments - Return Values - Scope (local and global) |
| Python Fundamentals | - Type Conversion - Input/Output Operations - Variables and Data Types - Operators and Expressions |
| Data Structures | - Dictionaries - Sets - Lists and List Operations - Tuples - String Manipulation |
| File Handling and Exceptions | - Reading and Writing Files - Exception Handling (try, except, finally) - Custom Exceptions |
| Testing and Debugging | - Debugging Techniques - Unit Testing Concepts - Trace Errors |
| Control Structures | - Conditional Statements (if, elif, else) - Loop Control (break, continue, pass) - Nested Conditionals and Loops - Loops (for, while) |
| Object-Oriented Programming | - Inheritance - Encapsulation - Attributes and Methods - Classes and Objects - Constructors (__init__) |
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NEW QUESTION # 27
Write a complete function word_count(text) that counts and returns the number of words in the given text.
Words are separated by spaces.
For example, word_count( " Hello world Python " ) should return 3.
def word_count(text):
# TODO: Count and return the number of words in text
pass
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives one string parameter named text.
Step 2: Since words are separated by spaces, use the .split() method to split the string into a list of words.
Step 3: Use len() to count how many items are in the list.
Step 4: Return that count.
Correct code:
def word_count(text):
return len(text.split())
Example:
print(word_count( " Hello world Python " ))
Output:
3
NEW QUESTION # 28
Modify the function greet_with_default(name) by adding a default value of " World " to the name parameter so it can be called with or without an argument.
def greet_with_default(name):
# TODO: Add a default value of " World " to the name parameter
return " Hello " + name
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: A default parameter value allows a function to be called even when no argument is provided.
Step 2: The default value should be added in the function header.
Step 3: The parameter name should have the default value " World " .
Correct code:
def greet_with_default(name= " World " ):
return " Hello " + name
Example:
print(greet_with_default())
print(greet_with_default( " Alice " ))
Output:
Hello World
Hello Alice
NEW QUESTION # 29
What happens when the command python is entered in a terminal without a filename?
Answer: B
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 # 30
A program needs to update all values in a list by adding 5 to each number. Which for loop structure accomplishes this task?
Answer: A
Explanation:
To update the actual values inside a list, the program must update each value by itsindex.
The correct code is:
for i in range(len(numbers)):
numbers[i] = numbers[i] + 5
Here, range(len(numbers)) produces valid index positions for the list. The variable i is used to access and update each list element.
Example:
numbers = [10, 20, 30]
for i in range(len(numbers)):
numbers[i] = numbers[i] + 5
print(numbers)
Output:
[15, 25, 35]
Option A does not correctly update the original list:
for number in numbers:
number = number + 5
This changes only the temporary loop variable number, not the actual elements stored inside the list.
Therefore, the correct answer isB.
NEW QUESTION # 31
What must a developer do to run Python code written in a text editor?
Answer: C
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 # 32
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