python - Add pandas Series to a DataFrame, preserving index -

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i have been having problems adding contents of pandas series pandas dataframe. start empty dataframe, initialised several columns (corresponding consecutive dates).

i sequentially fill dataframe using different pandas series, each 1 corresponding different date. however, each series has (potentially) different index.

i resulting dataframe have index union of each of series indices.

i have been doing far:

for date in dates:      df[date] = series_for_date

however, df index corresponds of first series , data in successive series correspond index 'key' not in first series lost.

any appreciated!

ben

if understand can use concat:

pd.concat([series1,series2,series3],axis=1)

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