Python Reading files

1. What Does Reading a File Mean?

Reading a file means opening a file and getting its data into your program.

In simple words:
👉 Python opens a file
👉 Reads the text inside it
👉 Shows or uses that text

2. Create a Sample File (data.txt)

Before reading, let’s create a file.

3. Read the Whole File (read())

Example

4. Best Way to Read File (with Statement)

This is the recommended way.

Example

5. Read File Line by Line (for loop)

Example

6. Read Only One Line (readline())

Example

7. Read All Lines as a List (readlines())

Example

Output:

8. Remove Extra New Line (strip())

Example

9. Read File Using Loop and Count Lines

Example

10. Read File Safely (Using Try Except)

Example

11. Check If File Exists Before Reading

Example

12. Common Beginner Mistakes

❌ Forgetting File Mode

✔ Better:

❌ File Not Closed

✔ Use with.

13. Simple Practice Examples

Example 1: Read User File

Example 2: Read First Line Only

Example 3: Count Words

14. Summary (Python Reading Files)

✔ Files store data permanently
✔ Use "r" mode to read
✔ with is safest way
✔ read(), readline(), readlines()
✔ Important for real programs

📘 Perfect for Beginner eBook

This chapter is ideal for:

• Python beginner books

• School & college students

• Self-learners

If you want next, I can write:

• Writing Files

• Appending Files

• CSV & JSON Files

• Mini Python Projects

Just tell me