fix

u8/program.py

@@ -51,6 +51,10 @@ def main():
 
   print("Expert zo zoo to vie.")
 
+  if not lines:
+    print("Chybna databaza")
+    return
+
   try:
     prvi = lines.index("")
   except ValueError:
@@ -58,7 +62,7 @@ def main():
     return
 
   stromlines = lines[:prvi]
-  vibir = [l.strip() for l in lines[prvi + 1 :]]
+  vibir = lines[prvi + 1 :]
 
   if not stromlines:
     print("Chybna databaza")