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index 6e4ab82..7228c9d 100644
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diff --git a/Search-based Planning/__pycache__/plotting.cpython-37.pyc b/Search-based Planning/__pycache__/plotting.cpython-37.pyc
index a8e285e..d59a878 100644
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diff --git a/Search-based Planning/__pycache__/queue.cpython-37.pyc b/Search-based Planning/__pycache__/queue.cpython-37.pyc
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diff --git a/Search-based Planning/env.py b/Search-based Planning/env.py
index c8e517d..9ea6036 100644
--- a/Search-based Planning/env.py	
+++ b/Search-based Planning/env.py	
@@ -1,9 +1,3 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-"""
-@author: huiming zhou
-"""
-
 class Env():
     def __init__(self):
         self.x_range = 51           # size of background