python - Concatenating pandas DataFrames with datetime columns -


i'm trying concatenate 2 dataframes (called firstdata , lastdata) created sql queries. however, when try concatenate them, error says typeerror: can't compare datetime.datetime int. judging message, i'm thinking issue concatenation authorized field. dummy data data frame looks below. thoughts on how around this?

print firstdata   order_id    email             ip       authorized   0   1234567   dummy@dummy.net   x.x.x.x  2008-11-15 19:16:07    1   8911234   dummy@dummy.com   x.x.x.x  2008-11-15 17:59:55    2   4567833   dummy@dummy.com   x.x.x.x  2008-11-15 17:50:20          hour  day_of_week shipment_type  zips_match     merch_subcat      0    19    7           standard       1              accessory       1    17    7           standard       1              accessory       2    17    7           standard       1              kid toy/clothes  print lastdata      order_id  email              ip     authorized  3   1234567 dummy@dummy.net  x.x.x.x  2008-11-15 17:43:13  4   8901234 dummy@dummy.com  x.x.x.x  2008-11-15 13:18:01     5   4567890 dummy@dummy.com  x.x.x.x  2008-11-15 09:29:10        hour day_of_week  shipment_type      zips_match    merch_subcat 3  17    7           standard           1             bag    4  13    7           standard           1             paperweight/boxes      5  09    7           standard           0             candle      concat(firstdata, lastdata)    typeerror: can't compare datetime.datetime int

you need pass list, dict, tuple, or generator of dataframe or series objects concat. you're doing throw typeerror because lastdata being passed axis argument (and there numerous lines axis == 0, trigger typeerror). this:

in [31]: out[31]:    0        1                2        3           4         5 0  0  1234567  dummy@dummy.net  x.x.x.x  2008-11-15  19:16:07 1  1  8911234  dummy@dummy.com  x.x.x.x  2008-11-15  17:59:55 2  2  4567833  dummy@dummy.com  x.x.x.x  2008-11-15  17:50:20  in [32]: b out[32]:    0        1                2        3           4         5 0  3  1234567  dummy@dummy.net  x.x.x.x  2008-11-15  17:43:13 1  4  8901234  dummy@dummy.com  x.x.x.x  2008-11-15  13:18:01 2  5  4567890  dummy@dummy.com  x.x.x.x  2008-11-15  09:29:10  in [33]: concat([a, b]) out[33]:    0        1                2        3           4         5 0  0  1234567  dummy@dummy.net  x.x.x.x  2008-11-15  19:16:07 1  1  8911234  dummy@dummy.com  x.x.x.x  2008-11-15  17:59:55 2  2  4567833  dummy@dummy.com  x.x.x.x  2008-11-15  17:50:20 0  3  1234567  dummy@dummy.net  x.x.x.x  2008-11-15  17:43:13 1  4  8901234  dummy@dummy.com  x.x.x.x  2008-11-15  13:18:01 2  5  4567890  dummy@dummy.com  x.x.x.x  2008-11-15  09:29:10  in [34]: concat([a, b], axis=1) out[34]:    0        1                2        3           4         5  0        1  \ 0  0  1234567  dummy@dummy.net  x.x.x.x  2008-11-15  19:16:07  3  1234567 1  1  8911234  dummy@dummy.com  x.x.x.x  2008-11-15  17:59:55  4  8901234 2  2  4567833  dummy@dummy.com  x.x.x.x  2008-11-15  17:50:20  5  4567890                   2        3           4         5 0  dummy@dummy.net  x.x.x.x  2008-11-15  17:43:13 1  dummy@dummy.com  x.x.x.x  2008-11-15  13:18:01 2  dummy@dummy.com  x.x.x.x  2008-11-15  09:29:10

this raises assertionerror, since commit 36142334 (which in v0.12.0 release) won't cryptic error anymore.


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