优化

tools/cal_weight.py

@@ -89,4 +89,4 @@ if __name__ == '__main__':
         sizes = sys.argv[3].split(',')
         for pid in pids:
             main(action, pid, sizes)
-        print('Usage: python cal_weight.py <pids>')
+        print('Usage: python cal_weight.py print <pids> 自定义尺寸/默认四个尺寸就不填')