Python script for converting DrugBank XML to relational CSV files. If loading CSVs to a SQL database, a sample query is:
select distinct drugbank_id, drugname, inhibitor, antagonist, agonist
from drugbank05_drug2target
join drugbank05_partner_protein using (partner_id)
join drugbank05_drugs using (drugbank_id)
where gene_name = 'KCNH2';

Tested on DrugBank 5.0.5 (3/4/17)

Dependencies: lxml

Outputs:

• drugbank05_drugs.csv
• drugbank05_drug2target.csv
• drugbank05_drug2target_human.csv
• drugbank05_drug2enzyme.csv
• drugbank05_drug2enzyme_human.csv
• drugbank05_drug2transporter.csv
• drugbank05_drug2transporter_human.csv
• drugbank05_partner_protein.csv
• drugbank05_partner_protein_human.csv