check passwords file exists

src/dokos/dokos.py

@@ -156,8 +156,12 @@ def main():
     parse_arguments()
 
     if not validators.url(ARGS.url) :
-        print("URL " + ARGS.url + "is not valid!")
-        sys.exit(-1)
+        print("URL " + ARGS.url + " is not valid!")
+        sys.exit()
+
+    if not os.path.isfile(ARGS.passwords) :
+        print("Passwords file " + ARGS.passwords + " does not exist!")
+        sys.exit()
 
     with open(ARGS.passwords, "r") as passwords_file:
 
@@ -183,7 +187,7 @@ def main():
         except KeyboardInterrupt:
             # User interrupt the program with ctrl+c
             print_safe("Stopping threads...")
-            executor.shutdown(wait=False, cancel_futures=True)
+            executor.shutdown(wait=True, cancel_futures=True)
             sys.exit()