User:Niraj/Teaching-6

Teaching lesson plan 6 Subject: Python programming

Date: 21 Jan 2024

Time: 60 minutes

Period: 3rd

Teaching Item: Writing Binary Files Manually in Python

Class: Bachelor

Objective: By the end of this lesson, students will be able to:

1. Understand the concept of binary files and their importance in handling non-textual data.
2. Learn how to write binary data to files in Python manually.
3. Practice writing various types of binary data to files.

Materials Needed:

• Python interpreter or IDE
• Projector for demonstration

Introduction (5 minutes):

1. Introduce the concept of binary files and explain their significance in handling non-textual data, such as images, audio, video, and binary-encoded data.
2. Discuss the difference between text and binary files, emphasizing that binary files store data in its raw binary format, while text files store data as human-readable characters.
3. Explain that writing binary data to files manually gives programmers more control over the format and structure of the data.

Writing Binary Data to Files (20 minutes):

1. Explain the process of writing binary data to files in Python.
2. Discuss the open() function with the "wb" mode parameter for opening files in binary write mode.
3. Demonstrate how to open a file in binary write mode and use the write() method to write binary data to it.
4. Discuss the differences between writing binary data and writing text data to files, such as the need to encode data as bytes before writing.
5. Show examples of writing different types of binary data to files, such as integers, floating-point numbers, and byte arrays.
6. Discuss error handling techniques, such as using try-except blocks, when writing binary data to handle exceptions like FileNotFoundError.

Writing Binary Data from Objects (10 minutes):

1. Discuss how to write binary data from objects to files.
2. Demonstrate how to serialize objects using libraries like pickle or struct before writing them to binary files.
3. Show examples of serializing and writing objects to binary files, such as dictionaries, lists, or custom classes.

Practical Exercises (10 minutes):

1. Provide students with exercises to practice writing various types of binary data to files.
2. Encourage them to experiment with writing different types of data and exploring the resulting binary files.
3. Circulate around the classroom to provide assistance and guidance as needed.

Conclusion (5 minutes):

1. Summarize the key points covered in the lesson: writing binary files manually in Python.
2. Reiterate the importance of understanding binary files for handling non-textual data effectively in programming.
3. Encourage students to continue practicing and experimenting with writing binary data to files to strengthen their understanding.
4. Invite questions from students and address any remaining doubts or confusion.

Assessment:

• Informal assessment through observation of students' participation in discussions and activities.
• Review students' completed exercises or tasks to assess their understanding of writing binary files manually in Python.