python编程常见错误笔记

1：python中SyntaxError:Non-ASCII解决方法：

 File "F:\progrem\luna\DeepLearningBasicsMachineLearned\DecisionTree\AllElectronics_1.py", line 1
 SyntaxError: Non-ASCII character '\xe5' in file F:\progrem\luna\DeepLearningBasicsMachineLearned\DecisionTree\AllElectronics_1.py on line 1, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details

解决这个错误只需要在Python头部加上：

 #-*- coding:utf-8 -*-

2：python中IndentationError: expected an indented block解决方法：

出现这个错误，你根据错误提示行查看你的代码是否缩进了，一般是因为语句没有缩进引起的。

3：python中socket.error:[Errno 9] Bad file descriptor解决方法：

 waiting for connection...
 ....connected from: ('127.0.0.1', 58022)
 Traceback (most recent call last):
   File "tsTserv.py", line 20, in
     data = tcpCliSock.recv(BUFSIZ)
   File "/usr/lib/python2.7/socket.py", line 174, in _dummy
     raise error(EBADF, 'Bad file descriptor')
 socket.error: [Errno 9] Bad file descriptor

出现这个错误一般是服务器还需要接受data而客户端的socket连接已经关闭了，这时你需要查看你客户端socket关闭连接的位置是否正确