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Building Robust Object-Oriented Python Applications and Libraries

Solution: Create a Data Management System

Explore how to create a complete data management system in Python by parsing CSV files, formatting and validating data with regular expressions, managing file paths, generating reports, and serializing data to JSON. This lesson helps you understand practical techniques for handling and processing data files within object-oriented Python applications.

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Parsing and processing data files

Define a DataAnalyzer class containing the parse_data_files() method that reads CSV files in the specified directory and extracts the data. Then create a method named format_data() to format data into a string for processing.

Python 3.10.4

Code explanation

In the main.py file:

  • Line 4–6: Defined the DataAnalyzer class and its constructor __init__() that takes the data_directory parameter, representing the path to the directory containing the data files.

  • Line 8–17: Created the parse_data_files() method to iterate through the files in the specified data_directory. If a file has the extension .csv, it opens the file using the open() function. Then within a with block, a csv_reader was created using the ...