diff --git a/2022.03.16_frequently_used_python_package/pickle_example.py b/2022.03.16_frequently_used_python_package/pickle_example.py
index b5d9487..a4fe937 100644
--- a/2022.03.16_frequently_used_python_package/pickle_example.py
+++ b/2022.03.16_frequently_used_python_package/pickle_example.py
@@ -1,7 +1,20 @@
 import pickle
+
 data = [1, 2, 3]
+
+# 保存为文件
 with open('a.txt', 'wb') as f:
     pickle.dump(data, f)
 with open('a.txt', 'rb') as f:
-    data_load = pickle.load(f)
-print(data_load)
\ No newline at end of file
+    data_load_from_file = pickle.load(f)
+print(data_load_from_file)
+print()
+
+# 把对象转换成字节流
+serialized_data = pickle.dumps(data) # 转换成字节流
+print(type(serialized_data))
+print(serialized_data)
+print()
+loaded_data = pickle.loads(serialized_data) # 转换成原类型
+print(type(loaded_data))
+print(loaded_data)
\ No newline at end of file