python - Print value from a DataFrame (wrong output, need only 1 item from a DataFrame) -


i have for loop going find matching values 2 dataframes. list read:

 index, row in output_merged_po.iterrows():     stock = output_merged_stock[output_merged_stock['pn_stripped'] == row['pn_stripped']][['whs']]     print stock

in results when pn matches:

         whs     111      vko      1111     vko 1112     zzz

so if put

if stock.iloc[0:3]['whs'].values[0] == '_':    print stock

or 

if any(stock['whs'] == 'vno'):     print stock

i result above:

         whs     111      vko      1111     vko 1112     zzz

where need see 111 , 1111 lines whs vko.

however, if write second whs name (zzz):

if stock.iloc[0:3]['whs'].values[0] == 'zzz':     print stock

i empty line, no info printed, while want see

          whs 1112      zzz

to printed.

how possible solve problem , see line/lines needed see?


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