Update pmc.py

pmc.py

@@ -61,7 +61,7 @@ def doi_to_pmc():
 
             if doi_pmc_data['status'] == 'ok':
                 pmc_list = [record['pmcid'] for record in doi_pmc_data['records'] if 'pmcid' in record and record.get('live', True)]
-                pmc_data[topic] = pmc_list[:4]
+                pmc_data[topic] = pmc_list[:2]
         except Exception as e:
             print(f"Error: {str(e)}")
     return json.dumps(pmc_data, indent=4, ensure_ascii=False)
@@ -74,7 +74,7 @@ def extract_pmc_data():
     for topic, pmcids in pmcid_data.items():
         pmc_ids = []
         for pmcid in pmcids:
-            if len(pmc_ids) >= 4:
+            if len(pmc_ids) >= 2:
                 break
             if not utils.check_data_in_file(pmcid, 'pmc.txt'):
                 utils.write_data_to_file(pmcid, 'pmc.txt')