Greg Pomerantz
3c5bee96ce
Some dump files carry a trailing 'ctime' column: an older pipeline appended a FULL re-download of the symbol per download (up to ~28 vintages per date, 2019-2022). The consumer keeps the last row per date, so it silently used stale (~2021) vintages where Yahoo later revised values. scripts/clean_multivintage.py keeps, per date, the rows from the newest ctime (event files keep distinct same-day amounts; history/split keep the single newest row), drops the ctime column, sorts by date. Applied to the data root and overrides/frozen (which carried the same artifact): 1,065 files, 2,202,712 stale rows dropped. Also: stripped 3 UTF-8 BOMs (teg/lo/krft), refreshed the event backup with the cleaned files, and re-ran the double-listing scan: category C (83 symbols, 18,636 repeated within-file rows) is fully explained by the multi-vintage artifact and is now gone; A (6,589 pairs, corrected) and B (12,366 pairs, open review list) are unchanged. Whole-set structural QC after cleaning: 0 duplicate dates, 3 syms/15 rows of OHLC invariant violations, 15 syms/2,897 rows of non-positive prices (mostly long-delisted tickers), 8 unsorted files (reader sorts).
26 lines
420 B
Plaintext
26 lines
420 B
Plaintext
Date,Dividends
|
|
2012-03-22,0.018
|
|
2012-06-21,0.054
|
|
2012-09-20,0.052
|
|
2012-12-12,0.025
|
|
2012-12-27,0.071
|
|
2013-06-20,0.028
|
|
2013-09-19,0.037
|
|
2013-12-11,0.028
|
|
2013-12-27,0.011
|
|
2014-03-20,0.032
|
|
2014-06-19,0.018
|
|
2014-09-18,0.045
|
|
2014-12-10,0.38
|
|
2014-12-29,0.28
|
|
2015-03-19,0.02
|
|
2015-06-18,0.058
|
|
2015-09-17,0.059
|
|
2015-12-16,0.068
|
|
2015-12-29,0.112
|
|
2016-06-16,0.048
|
|
2016-12-28,0.207
|
|
2017-06-15,0.108
|
|
2017-09-14,0.055
|
|
2017-12-27,0.132
|