Introducing Binary File Handling and Learning Resources The educator sets the stage by introducing binary file handling within the context of Class 12 Computer Science. Resources are neatly organized in dedicated playlists to simplify navigation. The roadmap outlines upcoming demonstrations on binary files followed by CSV file handling topics.
Defining Binary Write Operations for Plant Records A function is designed to write plant records into a binary file with each record containing an ID, name, and price. User input is taken in a loop until termination, and the collected data is stored using the pickle module. The approach ensures that each record is consistently formatted and saved.
Filtering Plant Records Based on Price Threshold A complementary function reads the plant records and selectively displays entries with prices exceeding 500. The implementation leverages list indexing to extract the price field and apply a simple condition. Successful execution confirms that only high-priced plant records are retrieved.
Managing Book Records Using Binary File Techniques A structured binary file is used to store book details such as number, name, author, and price. A user-defined function inputs these details and writes them into the file using the pickle module. This method provides a systematic approach to handling book records in binary format.
Counting Books by Author with Custom Functions A dedicated function iterates through the binary book records to count the number of entries written by a specified author. It compares the author field within each record using list indexing. The function ultimately returns the count reflecting how many books match the given author’s name.
Displaying Comedy Movies from a Cinema Binary File A separate binary file stores movie records containing a number, name, and type. A function is employed to read these records and display only those movies categorized as comedy. The filtering mechanism uses index-based checks to ensure that only comedy movies are shown.
Copying Comedy Movie Records to a Separate File An enhanced routine reads movie records from the cinema file and copies all comedy-type entries into another binary file. The process involves opening the original file in read mode and the destination file in write mode. Conditional checks and the pickle dump function ensure that only relevant records are transferred.
Retrieving Dict-Based Items Exceeding a Monetary Threshold A binary file is utilized to store item records as dictionaries with keys for item ID, name, and amount. A function iterates through these dictionaries to display the item name and amount, but only for records where the amount exceeds 1000. This selective display confirms that the conditional logic properly identifies high-value items.