Apply series as row to pandas dataframe with same series in all rows

Question

I'd like to apply a series to the end of a dataframe, but have the same series in each row of the dataframe. Wondering how I can do this? Example below. Thanks!

Dataframe:

   a  b
0  2  3
1  6  5

Series:

var1    foo
var2    bar
dtype: object

Output:

   a  b  var1  var2
0  2  3  foo   bar
1  6  5  foo   bar

score 2 · Accepted Answer · answered May 23 '18 at 01:39

2

By using assign

df.assign(**s)
Out[354]: 
   a  b var1 var2
0  2  3  foo  bar
1  6  5  foo  bar

answered May 23 '18 at 01:39

BENY

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Interesting, what does the ** denote? Thanks – nicholas.reichel May 23 '18 at 01:43
@nicholas.reichel you can check here https://stackoverflow.com/questions/36901/what-does-double-star-asterisk-and-star-asterisk-do-for-parameters – BENY May 23 '18 at 01:45
It works in my test program but its showing nan's in my real program. Any ideas ? https://imgur.com/a/nQBpZql – nicholas.reichel May 23 '18 at 01:45
@nicholas.reichel Base on my checking, that is one-line data frame , not Series, convert to series , it should work – BENY May 23 '18 at 01:47
@nicholas.reichel yw :-) – BENY May 23 '18 at 01:49

Apply series as row to pandas dataframe with same series in all rows

1 Answers1