解决python3中自定义wsgi函数,make_server函数报错的问题
Python  /  管理员 发布于 6年前   216
#coding:utf-8from wsgiref.simple_server import make_serverdef RunServer(environ, start_response): start_response('200 OK', [('Content-Type', 'text/html')]) return '<h1>Hello, web!</h1>'if __name__ == '__main__': httpd = make_server('localhost', 8000, RunServer) print ("Serving HTTP on port 8000...") httpd.serve_forever()
这段代码在python2.7中可以运行,到python3.4中运行,就开始报错,报错内容如下:
Serving HTTP on port 8000...127.0.0.1 - - [12/Apr/2016 16:44:17] "GET / HTTP/1.1" 200 0Traceback (most recent call last):File "C:\Python34\lib\wsgiref\handlers.py", line 138, in runself.finish_response()File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)File "C:\Python34\lib\wsgiref\handlers.py", line 267, in write"write() argument must be a bytes instance"AssertionError: write() argument must be a bytes instance127.0.0.1 - - [12/Apr/2016 16:44:17] "GET / HTTP/1.1" 500 59Traceback (most recent call last):File "C:\Python34\lib\wsgiref\handlers.py", line 138, in runself.finish_response()File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)File "C:\Python34\lib\wsgiref\handlers.py", line 267, in write"write() argument must be a bytes instance"AssertionError: write() argument must be a bytes instanceDuring handling of the above exception, another exception occurred:Traceback (most recent call last):File "C:\Python34\lib\wsgiref\handlers.py", line 141, in runself.handle_error()File "C:\Python34\lib\wsgiref\handlers.py", line 369, in handle_errorself.finish_response()File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)File "C:\Python34\lib\wsgiref\handlers.py", line 275, in writeself.send_headers()File "C:\Python34\lib\wsgiref\handlers.py", line 332, in send_headersif not self.origin_server or self.client_is_modern():File "C:\Python34\lib\wsgiref\handlers.py", line 345, in client_is_modernreturn self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'TypeError: 'NoneType' object is not subscriptableDuring handling of the above exception, another exception occurred:Traceback (most recent call last):----------------------------------------Exception happened during processing of request from ('127.0.0.1', 60566)File "C:\Python34\lib\socketserver.py", line 305, in _handle_request_noblockself.process_request(request, client_address)File "C:\Python34\lib\socketserver.py", line 331, in process_requestself.finish_request(request, client_address)File "C:\Python34\lib\socketserver.py", line 344, in finish_requestself.RequestHandlerClass(request, client_address, self)File "C:\Python34\lib\socketserver.py", line 673, in __init__self.handle()File "C:\Python34\lib\wsgiref\simple_server.py", line 133, in handlehandler.run(self.server.get_app())File "C:\Python34\lib\wsgiref\handlers.py", line 144, in runself.close()File "C:\Python34\lib\wsgiref\simple_server.py", line 35, in closeself.status.split(' ',1)[0], self.bytes_sentAttributeError: 'NoneType' object has no attribute 'split'--------------------------------------------------------------------------------Exception happened during processing of request from ('127.0.0.1', 60568)----------------------------------------127.0.0.1 - - [12/Apr/2016 16:44:18] "GET / HTTP/1.1" 200 0Traceback (most recent call last):File "C:\Python34\lib\wsgiref\handlers.py", line 138, in runself.finish_response()File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)File "C:\Python34\lib\wsgiref\handlers.py", line 267, in write"write() argument must be a bytes instance"AssertionError: write() argument must be a bytes instance127.0.0.1 - - [12/Apr/2016 16:44:18] "GET / HTTP/1.1" 500 59Traceback (most recent call last):File "C:\Python34\lib\wsgiref\handlers.py", line 138, in runself.finish_response()File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)File "C:\Python34\lib\wsgiref\handlers.py", line 267, in write"write() argument must be a bytes instance"AssertionError: write() argument must be a bytes instanceDuring handling of the above exception, another exception occurred:Traceback (most recent call last):File "C:\Python34\lib\wsgiref\handlers.py", line 141, in runself.handle_error()File "C:\Python34\lib\wsgiref\handlers.py", line 369, in handle_errorself.finish_response()File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)File "C:\Python34\lib\wsgiref\handlers.py", line 275, in writeself.send_headers()File "C:\Python34\lib\wsgiref\handlers.py", line 332, in send_headersif not self.origin_server or self.client_is_modern():File "C:\Python34\lib\wsgiref\handlers.py", line 345, in client_is_modernreturn self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'TypeError: 'NoneType' object is not subscriptableDuring handling of the above exception, another exception occurred:Traceback (most recent call last):File "C:\Python34\lib\socketserver.py", line 305, in _handle_request_noblockself.process_request(request, client_address)File "C:\Python34\lib\socketserver.py", line 331, in process_requestself.finish_request(request, client_address)File "C:\Python34\lib\socketserver.py", line 344, in finish_requestself.RequestHandlerClass(request, client_address, self)File "C:\Python34\lib\socketserver.py", line 673, in __init__self.handle()File "C:\Python34\lib\wsgiref\simple_server.py", line 133, in handlehandler.run(self.server.get_app())File "C:\Python34\lib\wsgiref\handlers.py", line 144, in runself.close()File "C:\Python34\lib\wsgiref\simple_server.py", line 35, in closeself.status.split(' ',1)[0], self.bytes_sentAttributeError: 'NoneType' object has no attribute 'split'
猛地一看,这么多报错,一下就蒙圈了,各种google百度,各种查,google到时能查到一些,
但是英文不好,也看不太明白,百度查到的都是垃圾,根本就没用,最后硬着头皮,一点一点看源码。
首先,根据第一行的提示:
File "C:\Python34\lib\wsgiref\handlers.py", line 138, in runself.finish_response()
我这里用的编辑器是pycharm,找到handlers.py文件的138行,按住ctrl点击文件中的finish_response()方法,
就找到self.finish_response()定义的位置了。根据第二条提示:
File "C:\Python34\lib\wsgiref\handlers.py", line 181, in finish_responseself.write(data)
发现是write方法出现错误,再按住ctrl点击write方法,找到定义write方法的位置,发现第一行就定义了一条报错:
assert type(data) is bytes, \"write() argument must be a bytes instance"
对照上面的报错信息,发现可能是变量data的类型,不是bytes,所以在handlers.py181行代码self.write(data)上面加一句:
data=data.encode(),再次刷新程序,发现所有报错居然都没了,程序正常运行。
以上这篇解决python3中自定义wsgi函数,make_server函数报错的问题就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
123 在
Clash for Windows作者删库跑路了,github已404中评论 按理说只要你在国内,所有的流量进出都在监控范围内,不管你怎么隐藏也没用,想搞你分..原梓番博客 在
在Laravel框架中使用模型Model分表最简单的方法中评论 好久好久都没看友情链接申请了,今天刚看,已经添加。..博主 在
佛跳墙vpn软件不会用?上不了网?佛跳墙vpn常见问题以及解决办法中评论 @1111老铁这个不行了,可以看看近期评论的其他文章..1111 在
佛跳墙vpn软件不会用?上不了网?佛跳墙vpn常见问题以及解决办法中评论 网站不能打开,博主百忙中能否发个APP下载链接,佛跳墙或极光..路人 在
php中使用hyperf框架调用讯飞星火大模型实现国内版chatgpt功能示例中评论 教程很详细,如果加个前端chatgpt对话页面就完美了..Copyright·© 2019 侯体宗版权所有· 粤ICP备20027696号