pandas dataframe with 2-rows header and export to csv

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It’s an ugly hack, but if you needed something to work Right Now(tm), you could write it out in two parts:

>>> pd.DataFrame(df.columns.tolist()).T.to_csv("noblankrows.csv", mode="w", header=False, index=False)
>>> df.to_csv("noblankrows.csv", mode="a", header=False, index=False)
>>> !cat noblankrows.csv
AA,BB,CC
DD,EE,FF
a,b,c1
a,b,c2
a,b,c3

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