diff --git a/README.md b/README.md
index d90f0b1..fb8ace5 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,8 @@
 ### python_magic_methods: Python进阶: 实例讲解Python中的魔法函数(Magic Methods)
 
 ### python_restful_api.py: 利用Python和Flask快速开发RESTful API
+
+### python_context.py: With语句和上下文管理器ContextManager
 ===================================================================================================
 
 ### 您可以fork该项目, 并在修改后提交Pull request
diff --git a/python_context.py b/python_context.py
new file mode 100644
index 0000000..479051a
--- /dev/null
+++ b/python_context.py
@@ -0,0 +1,78 @@
+# _*_ coding: utf-8 _*_
+
+"""
+python_context.py by xianhu
+"""
+
+import contextlib
+
+
+# 自定义打开文件操作
+class MyOpen(object):
+
+    def __init__(self, file_name):
+        """初始化方法"""
+        self.file_name = file_name
+        self.file_handler = None
+        return
+
+    def __enter__(self):
+        """enter方法，返回file_handler"""
+        print("enter:", self.file_name)
+        self.file_handler = open(self.file_name, "r")
+        return self.file_handler
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        """exit方法，关闭文件并返回True"""
+        print("exit:", exc_type, exc_val, exc_tb)
+        if self.file_handler:
+            self.file_handler.close()
+        return True
+
+# 使用实例
+with MyOpen("python_base.py") as file_in:
+    for line in file_in:
+        print(line)
+        raise ZeroDivisionError
+# 代码块中主动引发一个除零异常，但整个程序不会引发异常
+
+
+# 内置库contextlib的使用
+@contextlib.contextmanager
+def open_func(file_name):
+    # __enter__方法
+    print("open file:", file_name, "in __enter__")
+    file_handler = open(file_name, "r")
+
+    yield file_handler
+
+    # __exit__方法
+    print("close file:", file_name, "in __exit__")
+    file_handler.close()
+    return
+
+# 使用实例
+with open_func("python_base.py") as file_in:
+    for line in file_in:
+        print(line)
+        break
+
+
+# 内置库contextlib的使用
+class MyOpen2(object):
+
+    def __init__(self, file_name):
+        """初始化方法"""
+        self.file_handler = open(file_name, "r")
+        return
+
+    def close(self):
+        """关闭文件，会被自动调用"""
+        print("call close in MyOpen2")
+        if self.file_handler:
+            self.file_handler.close()
+        return
+
+# 使用实例
+with contextlib.closing(MyOpen2("python_base.py")) as file_in:
+    pass