Lesson 8.2: Advanced File and Data Handling
Introduction:
Advanced file and data handling in Python allows developers to process, manipulate, and store data efficiently. This lesson covers working with different file formats, CSV, JSON, and performing structured data operations.
1. Working with CSV Files:
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Use Python’s
csvmodule to read and write CSV files.
Example – Reading a CSV:
Example – Writing to a CSV:
2. Working with JSON Files:
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Use Python’s
jsonmodule to handle structured data.
Example – Reading JSON:
Example – Writing JSON:
3. File Handling Best Practices:
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Always use
withstatement to ensure files are closed properly -
Handle exceptions for file operations (
FileNotFoundError,PermissionError) -
Use encoding parameter (
utf-8) for consistent text processing
4. Practical Tips:
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Use CSV for tabular data and JSON for structured data
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Use pandas (next lesson) for efficient handling of large datasets
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Validate and sanitize data before writing to files
Learning Outcome of This Lesson:
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Read from and write to CSV and JSON files
-
Understand structured data storage and retrieval
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Apply best practices for robust file handling
-
Prepare for working with large datasets using Python libraries
