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).
77 lines
1.2 KiB
Plaintext
77 lines
1.2 KiB
Plaintext
Date,Dividends
|
|
2001-12-06,0.063
|
|
2002-03-13,0.063
|
|
2002-06-12,0.06
|
|
2002-09-11,0.06
|
|
2002-12-11,0.0642
|
|
2003-03-12,0.068
|
|
2003-06-11,0.0734
|
|
2003-09-10,0.0732
|
|
2003-12-10,0.0746
|
|
2004-03-11,0.1
|
|
2004-06-14,0.1
|
|
2004-09-13,0.1
|
|
2004-12-13,0.1
|
|
2005-03-11,0.1
|
|
2005-06-13,0.075
|
|
2005-09-13,0.075
|
|
2005-12-13,0.075
|
|
2006-03-13,0.075
|
|
2006-06-13,0.1
|
|
2006-09-13,0.1
|
|
2006-12-13,0.1
|
|
2007-03-13,0.2
|
|
2007-06-13,0.2
|
|
2007-09-12,0.2
|
|
2007-12-12,0.2
|
|
2008-03-12,0.4
|
|
2008-06-11,0.4
|
|
2008-09-11,0.4
|
|
2008-12-11,0.4
|
|
2009-03-12,0.4
|
|
2009-06-11,0.4
|
|
2009-09-11,0.4
|
|
2009-12-09,23.75
|
|
2009-12-17,0.2
|
|
2010-03-11,0.2
|
|
2010-06-11,0.2
|
|
2010-09-13,0.2
|
|
2010-12-13,0.2
|
|
2011-03-11,0.2
|
|
2011-06-13,0.2
|
|
2011-09-13,0.2
|
|
2011-12-13,0.2
|
|
2012-03-13,0.2
|
|
2012-06-13,0.2
|
|
2012-09-12,0.2
|
|
2012-12-12,0.2
|
|
2013-03-13,0.2
|
|
2013-06-12,0.2
|
|
2013-09-11,0.2
|
|
2013-12-11,0.07
|
|
2014-03-12,0.07
|
|
2014-06-11,0.07
|
|
2014-09-11,0.07
|
|
2014-12-11,0.07
|
|
2015-03-11,0.07
|
|
2015-06-11,0.07
|
|
2015-09-11,0.07
|
|
2015-12-11,0.07
|
|
2016-03-11,0.015
|
|
2016-06-13,0.015
|
|
2016-09-13,0.015
|
|
2016-12-13,0.015
|
|
2017-03-13,0.015
|
|
2017-06-13,0.015
|
|
2017-09-14,0.015
|
|
2017-12-14,0.015
|
|
2018-03-14,0.015
|
|
2018-06-14,0.015
|
|
2018-09-13,0.015
|
|
2018-12-13,0.015
|
|
2019-03-14,0.01875
|
|
2019-06-13,0.01875
|
|
2019-09-12,0.01875
|
|
2019-12-12,0.01875
|
|
2020-03-12,0.09375
|