diff --git a/py/__pycache__/get_data.cpython-312.pyc b/py/__pycache__/get_data.cpython-312.pyc
index bb13740..170e9f1 100644
Binary files a/py/__pycache__/get_data.cpython-312.pyc and b/py/__pycache__/get_data.cpython-312.pyc differ
diff --git a/py/get_data.py b/py/get_data.py
index 3317c8e..30078b0 100644
--- a/py/get_data.py
+++ b/py/get_data.py
@@ -54,10 +54,10 @@ def get_data(txt_name):
     with open(txt_name, 'r', encoding='utf-8') as f:
         lines = f.readlines()
     data = []
-    if not data:
-        return None, None, None, None
     for i, line in enumerate(lines, 1):
         data.append(line.split())
+    if not data:
+        return None, None, None, None
     x = []
     y = []
     for i in range(len(data)):
diff --git a/py/measure_lib.py b/py/measure_lib.py
index bc67698..7c2244f 100644
--- a/py/measure_lib.py
+++ b/py/measure_lib.py
@@ -236,7 +236,7 @@ def vs_measurement(txt_name, position = 900):
     x, y = calc_slope_line.find_intersection((k, -1, b), (slope_top, -1, intercept_top))
     Zw_intersection = calc_way.calc_height(x_intersection, y_intersection, x, y, alpha, beta)
     Xw_intersection, Yw_intersection = calc_way.calc_distance(x_intersection, y_intersection, alpha, beta)
-    print(Xw_intersection, Yw_intersection)
+    # print(Xw_intersection, Yw_intersection)
     # #位置修正
     # Yw_intersection = Yw_intersection + model.y
     Xw_bot = []
@@ -268,19 +268,19 @@ def vs_measurement(txt_name, position = 900):
     return 1, Zw_pos, distance_pos
 
 
-if __name__ == '__main__':
-    # t=time.time()
-    # h, w = vs_measurement(r'C:\Users\Administrator\Desktop\BYD\Visual measurement\py\new.txt')
-    # print(h,w)
-    # print(f"time: {time.time() - t}")
-    # x_zero, y_zero = calc_way.calc_zeros()
-    # x_zero = np.array(x_zero)
-    # y_zero = np.array(y_zero)
-    # print(f"x_zero: {x_zero}")
-    # print(f"y_zero: {y_zero}")
-    t = time.time()
-    test_name = r'C:\Users\Administrator\Desktop\BYD\error\20250620\20250620\CANNOT_CALCULATE_LINER_REGRESSION_.txt'
-    state, Zw_intersection, distance, Zw_pos, distance_pos = vs_measurement(test_name, 900)
-    # vs_measurement(txt_name)
-    print(f"time: {time.time() - t}")
-    print(Zw_intersection, distance, Zw_pos, distance_pos)
\ No newline at end of file
+# if __name__ == '__main__':
+#     # t=time.time()
+#     # h, w = vs_measurement(r'C:\Users\Administrator\Desktop\BYD\Visual measurement\py\new.txt')
+#     # print(h,w)
+#     # print(f"time: {time.time() - t}")
+#     # x_zero, y_zero = calc_way.calc_zeros()
+#     # x_zero = np.array(x_zero)
+#     # y_zero = np.array(y_zero)
+#     # print(f"x_zero: {x_zero}")
+#     # print(f"y_zero: {y_zero}")
+#     t = time.time()
+#     test_name = r'C:\Users\Administrator\Desktop\BYD\error\20250620\20250620\INPUT_MUST_NOT_BE_EMPTY.txt'
+#     state, Zw_pos, distance_pos = vs_measurement(test_name, 900)
+#     # vs_measurement(txt_name)
+#     print(f"time: {time.time() - t}")
+#     print( Zw_pos, distance_pos)
\ No newline at end of file
diff --git a/py/readme.txt b/py/readme.txt
new file mode 100644
index 0000000..9bee04d
--- /dev/null
+++ b/py/readme.txt
@@ -0,0 +1,14 @@
+函数说明：vs_measurement(txt_name, position )
+txt_name：路沿数据文件路径
+position：车上某点P与摄像头在X轴（行驶方向）上的偏移量，车头为正，车位为负。
+	       若不输入该参数默认为900，指向前车轮中心位置。
+
+返回值 state ， Zw_pos,  distance_pos
+
+state为-1：txt_name所传输的数据无法使用或数据为空
+state为0：文件路径不存在
+以上两种Zw_pos,  distance_pos都为none
+
+state = 1 ：
+Zw_pos返回P点或者默认点对应路沿的高度值
+distance_pos返回P点或者默认点与路沿的距离
\ No newline at end of file