Hello AnomalousMonk, Thank you so much for your help! It still can not print out what I wanted. Best, Yue 


ARRAY(0x56213ba811e0)PeptideID    ProteinID
ARRAY(0x56213ba80a48)6    109521
ARRAY(0x56213baa3148)7    741
ARRAY(0x56213ba75888)11    681
ARRAY(0x56213ba75888)11    780
ARRAY(0x56213ba759c0)20    2352
ARRAY(0x56213bb278e8)27    1490
ARRAY(0x56213bb278e8)27    1491
ARRAY(0x56213bb278e8)27    1492
ARRAY(0x56213bb27bd0)28    51996

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In reply to Re^2: match two files by yueli711
in thread match two files by yueli711

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