File system interaction basics in Python - Mini Project: Build & Apply

File system interaction basics

📖 Scenario: You are creating a simple program to work with files on your computer. This program will help you create a file, write some text into it, read the text back, and then show it on the screen.

🎯 Goal: Build a Python program that creates a text file, writes a sentence into it, reads the sentence back from the file, and prints it.

📋 What You'll Learn

Create a text file named example.txt

Write the exact text 'Hello, file system!' into the file

Read the text back from example.txt

Print the text read from the file

💡 Why This Matters

🌍 Real World

Working with files is common in many programs, like saving user data, logs, or configuration settings.

💼 Career

Understanding file system interaction is essential for software developers, data analysts, and system administrators to manage data and automate tasks.

1

Create a file and write text

Create a file called example.txt and write the exact text 'Hello, file system!' into it using the open function with mode 'w' and the write method.

Python

# Your code here

Need a hint?

Use with open(filename, 'w') as file: to open a file for writing, then use file.write(text) to write text.

2

Prepare to read the file

Create a variable called filename and set it to the string 'example.txt' to use it later for reading the file.

Python

with open('example.txt', 'w') as file:
    file.write('Hello, file system!')

# Create a variable called filename with value 'example.txt'
# Your code here

Need a hint?

Just assign the string 'example.txt' to a variable named filename.

3

Read the text from the file

Use the open function with the variable filename and mode 'r' to open the file for reading. Read the content using the read method and store it in a variable called content.

Python

with open('example.txt', 'w') as file:
    file.write('Hello, file system!')

filename = 'example.txt'

# Open the file using filename in read mode and read the content into variable content
# Your code here

Need a hint?

Use with open(filename, 'r') as file: and then content = file.read() to read the file content.

4

Print the content read from the file

Print the variable content to display the text read from the file.

Python

with open('example.txt', 'w') as file:
    file.write('Hello, file system!')

filename = 'example.txt'

with open(filename, 'r') as file:
    content = file.read()

# Print the content variable
# Your code here

Need a hint?

Use print(content) to show the text on the screen.