Update app.py

app.py

@@ -279,11 +279,16 @@ if submit and len(x) != 0:
   hormrecepcsv = hormrecepdf.to_csv('hormrecep.csv')
   
   with zipfile.ZipFile("allcsvs.zip", "w") as zipf:
-    zipf.write(edccancsv)
-    zipf.write(edcrecepcsv)
-    zipf.write(edchormcsv)
-    zipf.write(hormcancsv)
-    zipf.write(hormrecepcsv)
+    if edccancsv:
+      zipf.write(edccancsv)
+    if edcrecepcsv:
+       zipf.write(edcrecepcsv)
+    if edchormcsv:
+       zipf.write(edchormcsv)
+    if hormcancsv:
+      zipf.write(hormcancsv)
+    if hormrecepcsv:
+      zipf.write(hormrecepcsv)
   
   for e in edccanbis:
     edccan += [[e[3],e[0]+" ["+e[-1][0][2:]+"]", e[1]+" ["+e[-1][1][2:]+"]",e[2]]]