Writing to Files in Python | Complete File Handling Tutorial
Learn how to write and append data to files in Python! In this video, we break down the three core file modes — r (read), w (write), and a (append) — with hands-on examples. You'll learn why printing output isn't enough, how to save data permanently to a .txt file, the difference between overwriting and appending, how to use the "with open" statement the right way, and how to write multiple user inputs directly into a file. Perfect for beginners building real Python projects like grade generators, invoice tools, or logging systems.
If you missed the previous video on file handling modes, go check that out first — it'll make this one even easier to follow.
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Timestamps:
0:00 Introduction
0:31 Quick recap of file modes
0:39 Reading a file with "r" mode
1:14 Writing to a file with "w" mode
1:46 What is appending? ("a" mode)
2:47 Write vs Append — key difference explained
3:01 The right way to use "with open"
3:23 Writing multiple lines from user input
3:53 Fixing the type error
4:06 Why "w" overwrites — switching to append
4:28 Live demo: appending multiple entries
4:44 Final recap of all file modes
5:08 Outro