KITFORMA · EDITORIAL GUIDE
Why does a CSV export contain extra blank rows on Windows?
KitForma editorial guide. The CSV writer already manages line endings, and text-mode newline translation can interfere when the file is opened with default newline handling.
Step-by-step guidance
The CSV writer already manages line endings, and text-mode newline translation can interfere when the file is opened with default newline handling.
Open CSV files with
newline="" and an explicit encoding, then use csv.writer or csv.DictWriter. Read the file back with csv.reader and compare the row count rather than counting physical lines: quoted fields can contain real line breaks. Test a description containing both a comma and a newline. Do not repair CSV by deleting every blank line with string replacement; an empty field or a newline inside a quoted value can be meaningful data.Sources and verification
Sources checked:
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This starter guide was prepared by KitForma with AI assistance. It is not presented as a real member question or an independent user review. Check the sources and the result with your own file; report corrections in the discussion.