Trim whitespace from CSV output values

[iugrina]

Summary

Normalizes whitespace in CSV output values by collapsing multiple whitespace characters (spaces, tabs, newlines, etc.) into a single space.

Changes

• Added normalize_whitespace() helper function using regex to replace sequences of whitespace with a single space
• Updated save_csv() to apply normalization to all CSV values before writing
• Added re import

Technical Details

The normalization uses re.sub(r'\s+', ' ', value) which:

• Matches any sequence of whitespace characters (\s+ includes spaces, tabs, newlines, carriage returns, etc.)
• Replaces them with a single space character
• Applies to all CSV output files (stores.csv, products.csv, prices.csv)

Files Changed

• crawler/store/output.py

Impact

All CSV files generated by the crawler will have consistent whitespace formatting, improving data quality and consistency for downstream processing.

[senko]

Thanks!