Hi all, I created the following data frame (updated_distance_matrix)
P1 P2 P4 P5 (P3, P6) P1 0,000000 0,244307 0,367696 0,341760 0 P2 0.234307 0.000000 0.194165 0.1443178 0 P4 0.366969 0.194165 0.000000 0.284253 0 P5 0.341760 0.1443178 0.284253 0.000000 0 (P3, P6) 0.000000 0.000000 0.000000 0.000000 0 I can change the fields of columns and rows P1-P5 without problems. But when I try to access the fields of the row, or column, (P3, P6) print (updated_distance_matrix_df.loc [clusters [i], last_cluster]) the message appears: KeyError: 'the label [P3, P6] is not in the [index]' If I change find the "loc" by "at" method appears the error: print (updated_distance_matrix_df.at [clusters [i], last_cluster]) TypeError: unhashable type: 'list' And if you simply leave: print (updated_distance_matrix_df [clusters [i], last_cluster]) gives the error: TypeError: unhashable type: 'list' A last_cluster variable is of type list: print (last_cluster, type (last_cluster)) ['P3', 'P6'] <class 'list'> And a variable cluster [i] is a string: print (clusters [i], type (clusters [i])) P5 <class 'str'> Any tip? Thank you, Markos -- https://mail.python.org/mailman/listinfo/python-list