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Python Functions and File Operations

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Questions and Answers

What does the function less_than do with its parameters?

Counts values in the list that are equal to the target.

Counts values in the list that are less than or equal to the target.

Counts values in the list that are strictly less than the target. (correct)

Counts values in the list that are greater than the target.

What is the expected output of the reverse_sentence function when given the string 'Hello World'?

olleH dlroW

Hello World

World Hello (correct)

dlroW olleH

What data structure is used to store information about home hydroponic gardens?

List

Tuple

Set

Dictionary (correct)

Which of the following is NOT a correct action for managing the file numbers.txt in the given Python program?

Delete the numbers.txt file after reading. Signup and view all the answers

How does the function less_than handle its inputs?

It traverses the list and counts based on the target parameter. Signup and view all the answers

What will be the final value of 'b' after executing the main function in the provided Python program?

8 Signup and view all the answers

What is the expected output of the code segment that modifies the list 'num'?

[9, 8, 7, 8, 1] Signup and view all the answers

What does the 'less_than' function return when the list is empty?

0 Signup and view all the answers

What type of data is the 'gardens' dictionary meant to store?

Various types of home hydroponic garden information Signup and view all the answers

What is the output of the 'reverse_sentence' function when given 'Python is cool'?

looc si nohtyP Signup and view all the answers

Study Notes

Functions

less_than(numbers, target) function:
- Takes a list of numbers and an integer target as input.
- Iterates through the numbers list.
- Counts how many numbers in the list are strictly less than the target value.
- Returns the count.
reverse_sentence(sentence) function:
- Takes a string sentence as input.
- Prints the sentence in reverse order to standard output.

Dictionary

gardens dictionary:
- Stores information about different types of home hydroponic gardens.
- Key-value pairs to hold garden types and their details (e.g., type, size, features, cost).

Python Program for Average Calculation

Reads a file named numbers.txt containing numerical values.
Calculates the average of the numbers in the file.
Prints the calculated average to a file named output.txt.

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Description

This quiz covers essential Python functions including counting elements in a list, reversing strings, and reading from and writing to files. Test your understanding of how these fundamental operations work in Python programming! Dive into the practical application of functions and file handling.