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Knowledge
This chapter covers the handling of files in Python, detailing how to read from and write to files on disk. Key concepts include the importance of managing data in blocks, the necessity of opening and closing files, and the various modes for reading and writing. Additionally, the chapter explains methods for interacting with file data using Python functions and emphasizes understanding when the end of a file is reached during operations.
Sections
References
Chapter 28 part-A.pdfClass Notes
Memorization
What we have learnt
- Files are essential for han...
- Reading and writing operati...
- File handles are used to ab...
Final Test
Revision Tests
What we have learnt
- Files are essential for handling large amounts of data beyond what can be managed via standard input/output.
- Reading and writing operations occur in blocks due to performance considerations when accessing disk storage.
- File handles are used to abstract interactions with files, ensuring data is properly managed when files are opened and closed.
Key Concepts
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Term: File Handle
Definition: A reference that allows interaction with an open file, enabling reading and writing operations.
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Term: Buffer
Definition: A temporary storage area for data that allows file operations to manage smaller chunks of data in memory at a time.
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Term: File Modes
Definition: Designations such as 'r' for reading, 'w' for writing, and 'a' for appending, which specify how a file will be opened.
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Term: End of File (EOF)
Definition: A condition that signifies no more data can be read from a file, usually indicated by empty string returns in read operations.