Better output of arguments

src/reprod_friend.py

@@ -46,13 +46,16 @@ def main():
             if print_args:
                 print("\n")
                 for arg in p:
-                    if type(p[arg]) == bool and p[arg]:
+                    if p[arg] is None:
+                        print("", end=' ')
+
+                    elif type(p[arg]) == bool and p[arg]:
                         #note this only works for action='store_true'
                         print("--{}".format(arg), end=' ')
 
                     elif type(p[arg]) == bool and not p[arg]:
                         #note this only works for action='store_true'
-                        print("".format(arg), end=' ')
+                        print("", end=' ')
 
                     elif type(p[arg]) == str and ' ' in p[arg]:
                         print('--{}="{}"'.format(arg, p[arg]), end=' ')
@@ -72,7 +75,7 @@ def main():
                 shutil.copy2(pickle_path, copy_path)
     
         else:
-            print("No pickle path {} found for corresponding output {}"\
+            print("WARNING: No pickle path {} found for {}"\
                   .format(pickle_path, corresponding_output))
 
 if __name__=='__main__':