Merge pull request #35 from eastlakeside/issue28_add_pure_code

纯可执行代码的说明，以及同步了 #33 的代码修复

README.md

@@ -7,8 +7,8 @@ Python进阶
 - Github快速阅读任一章节：[进入目录](https://github.com/eastlakeside/interpy-zh/blob/master/SUMMARY.md)
 - Gitbook完整顺序地阅读：[进入Gitbook](https://eastlakeside.gitbooks.io/interpy-zh/content/)
 - 本地或kindle上阅读：[下载pdf/epub/mobi](https://github.com/eastlakeside/interpy-zh/releases)
-- 国内镜像：访问速度更快，不过更新可能稍微滞后：[v2ex热心网友kingmo888提供](http://lizenghai.com/doc/Intermediate_Python_CN/)
-
+- 国内镜像：访问速度更快，更新可能滞后：[kingmo888@v2ex提供](http://lizenghai.com/doc/Intermediate_Python_CN/)
+- 纯代码阅读和演示：[进入code目录](https://github.com/eastlakeside/interpy-zh/tree/master/code/)
 
 # 前言
 

code/2.7/7_decorators_args.py

@@ -9,6 +9,8 @@ def wrapped_function(*args, **kwargs):
 
 			with open(logfile, 'a') as opened_file:
 				opened_file.write(log_string + '\n')
+
+			return func(*args, **kwargs)
 		return wrapped_function
 	return logging_decorator
 

code/2.7/7_decorators_class.py

@@ -1,15 +1,24 @@
+from functools import wraps
+
 class logit(object):
-	def __init__(self, logfile='out.log'):
-		self.logfile = logfile
-	def __call__(self, func):
-		log_string = func.__name__ + ' was called'
-		print log_string
+    def __init__(self, logfile='out.log'):
+        self.logfile = logfile
 
-		with open(self.logfile, 'a') as opened_file:
-			opened_file.write(log_string + '\n')
-		self.notify
-	def notify(self):
-		pass
+    def __call__(self, func):
+        @wraps(func)
+        def wrapped_function(*args, **kwargs):
+            log_string = func.__name__ + " was called"
+            print(log_string)
+
+            with open(self.logfile, 'a') as opened_file:
+                opened_file.write(log_string + '\n')
+            self.notify()
+
+            return func(*args, **kwargs)
+        return wrapped_function
+
+    def notify(self):
+        pass
 
 class email_logit(logit):
 	def __init__(self, email='[email protected]', *args, **kwargs):

code/README.md

@@ -0,0 +1,7 @@
+示例代码说明
+=======
+> 此目录中为可执行的纯代码，方便读者自动动手执行，加深理解，或者用于项目中
+
+## Python版本兼容性
+- 书文中夹带的代码： 保证兼容Python 2/3，均可运行
+- 此处的代码： 为了更好地方便读者直接使用，做了专门针对2.7版本的代码，3+版本的代码暂未实现，欢迎PR