isn' true if an explicit index is specifiedin [ ]dataframe(popindex=[ ]out[ ]nevada ohio nan nan dicts of series are treated much in the same wayin [ ]pdata {'ohio'frame ['ohio'][:- ]'nevada'frame ['nevada'][: ]in [ ]dataframe(pdataout[ ]nevada ohio nan for complete list of things you can pass the dataframe constructorsee table - if dataframe' index and columns have their name attributes setthese will also be displayedin [ ]frame index name 'year'frame columns name 'statein [ ]frame out[ ]state nevada ohio year nan like seriesthe values attribute returns the data contained in the dataframe as ndarrayin [ ]frame values out[ ]array([nan ] ] ]]if the dataframe' columns are different dtypesthe dtype of the values array will be chosen to accomodate all of the columnsin [ ]frame values out[ ]array([[ ohio nan][ ohio - ][ ohio nan][ nevada - ][ nevada - ]]dtype=objectintroduction to pandas data structures www it-ebooks info