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    reduce(np.intersect1d, [df1.A, df2.A, df3.A]) Commented Oct 4, 2017 at 3:13
  • hi coldspeed, it works!! thanks for that. I would like to ask you the same question I have asked above. How to get the output without quotes or commas? many thanks for your time and help. Commented Oct 4, 2017 at 8:12
  • thanks for helping. Finally managed to figure it temporarily. Just converted the list into a data frame and that looks neat. Thanks for all your help. Commented Oct 4, 2017 at 9:58
  • does this still work if the dataframes have different length values? Commented Jun 15, 2020 at 11:29