Csv on 春江暮客 https://www.bobobk.com/en/tags/csv/ Recent content in Csv on 春江暮客 Hugo en Thu, 22 Oct 2026 22:31:19 +0800 Fix Python CSV Field Limits: Set a Character Cap and Test Boundaries https://www.bobobk.com/en/python-csv-field-size-limit.html Thu, 22 Oct 2026 22:31:19 +0800 https://www.bobobk.com/en/python-csv-field-size-limit.html Reproduce CSV field-limit errors, choose a finite character cap, and test multiline fields, broken quoting, exit codes, and restored parser settings. Python CSV Totals with Decimal: Validate Input and Control Rounding https://www.bobobk.com/en/python-csv-decimal-total.html Thu, 22 Oct 2026 05:02:11 +0800 https://www.bobobk.com/en/python-csv-decimal-total.html Sum CSV amounts with the Python standard library, define per-row rounding, validate prices and quantities, and stop on invalid data. Compare CSV Snapshots by ID with Python: Added, Removed, and Changed Records https://www.bobobk.com/en/python-csv-diff-by-key.html Wed, 21 Oct 2026 14:20:30 +0800 https://www.bobobk.com/en/python-csv-diff-by-key.html Compare CSV snapshots by a unique ID with the Python standard library, reject duplicate keys, and report additions, removals, and changed fields with automation-friendly exit codes. Split Large CSV Files with Python: Headers, Multiline Fields, and Completion Checks https://www.bobobk.com/en/python-split-csv-records.html Wed, 21 Oct 2026 06:22:30 +0800 https://www.bobobk.com/en/python-split-csv-records.html Split CSV records with the Python standard library, repeat headers, preserve multiline fields, and distinguish complete output from failed partial files. Read CSV Files Inside tar.gz with Python: Summaries Without Extraction https://www.bobobk.com/en/python-tar-gz-csv-without-extract.html Tue, 20 Oct 2026 14:24:08 +0800 https://www.bobobk.com/en/python-tar-gz-csv-without-extract.html Read a CSV member directly from tar.gz, reject duplicate names, validate input, and test failure exit codes. Validate CSV Structure with Python: Exact Headers, Column Order, and Field Counts https://www.bobobk.com/en/python-csv-schema-check.html Sat, 17 Oct 2026 11:43:33 +0800 https://www.bobobk.com/en/python-csv-schema-check.html Check exact CSV headers and field counts with the Python standard library, test multiline records and failure exit codes, and stop schema drift before imports. Fix CSV Encoding with Python: BOMs, GB18030, and UTF-16 https://www.bobobk.com/en/python-csv-encoding-utf8.html Wed, 14 Oct 2026 14:44:28 +0800 https://www.bobobk.com/en/python-csv-encoding-utf8.html Convert known CSV encodings to UTF-8, preserve IDs and line endings, and verify BOMs and failure behavior without overwriting files. Sample a Large CSV with Python: Reservoir Sampling with a Fixed Seed https://www.bobobk.com/en/python-csv-reservoir-sampling.html Thu, 08 Oct 2026 08:59:00 +0800 https://www.bobobk.com/en/python-csv-reservoir-sampling.html Sample complete CSV records in one pass with Python, preserve the header, control memory use, and reproduce the sample with a recorded seed. Find Duplicate CSV IDs with Python and SQLite https://www.bobobk.com/en/python-csv-duplicate-ids-sqlite.html Thu, 08 Oct 2026 08:01:42 +0800 https://www.bobobk.com/en/python-csv-duplicate-ids-sqlite.html Stream a CSV into a temporary SQLite index, report repeated sample IDs and record positions, and validate the result without keeping every ID in a Python set. Stream Large CSV Files with Python: Validate Rows and Count Labels https://www.bobobk.com/en/python-stream-large-csv.html Mon, 28 Sep 2026 15:31:31 +0800 https://www.bobobk.com/en/python-stream-large-csv.html Read CSV records one at a time with Python, validate sample IDs and labels, and produce a small JSON summary without loading the whole file.