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File Handling in Python

CBSE · Class 12 · Computer Science

Complete topic list for File Handling in Python in CBSE Class 12 Computer Science. Key concepts, sub-topics, and what to focus on for board exams.

45 questions22 flashcards5 concepts

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Illustrates why file handling is necessary, showing the difference between temporary data in RAM (variables) and permanent data storage on secondary devices (files).
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4 Topics · CBSE Class 12 Computer Science

Topics in File Handling in Python

1

Introduction to Files and File Types

  • A file is a named location on secondary storage media where data is permanently stored
  • Files store data as collections of 0s and 1s (binary format)
  • Two main types: Text files and Binary files
2

Opening and Closing Files

  • Use open() function to open files: file_object = open(file_name, access_mode)
  • File object establishes link between program and data file
  • Always close files using close() method after operations
3

File Access Modes

  • 'r': Read-only mode, file pointer at beginning
  • 'w': Write mode, overwrites existing content, creates new if doesn't exist
  • 'a': Append mode, file pointer at end, creates new if doesn't exist
4

Writing to Text Files

  • write() method writes single string to file
  • writelines() method writes sequence of strings
  • write() returns number of characters written

Key Concepts

A file is a named locationFiles are opened using open(file_namewrite() method writes a single stringread(n) reads n bytes or entiretell() method returns current position

Frequently Asked Questions

What are the important topics in File Handling in Python for CBSE Class 12 Computer Science?
File Handling in Python covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in File Handling in Python — CBSE Class 12 Computer Science?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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