Update app.py

app.py

@@ -321,7 +321,7 @@ def preprocess_mol(pdb_code="", filepath=""):
         os.system(f"wget -qnc https://files.rcsb.org/view/{pdb_code}.pdb")
         print(os.getcwd())
         print(os.listdir())
-        print(os.system(f"cat {pdb_code}.pdb"))
+        print(os.system(f"head -n20 {pdb_code}.pdb"))
         mol = Molecule(f"{pdb_code}.pdb")
     tf_original = tempfile.NamedTemporaryFile(delete=False) 
     mol.write(tf_original.name)