解决python3中自定义wsgi函数,make_server函数报错的问题
#coding:utf-8
fromwsgiref.simple_serverimportmake_server
defRunServer(environ,start_response):
start_response('200OK',[('Content-Type','text/html')])
return'Hello,web!
'
if__name__=='__main__':
httpd=make_server('localhost',8000,RunServer)
print("ServingHTTPonport8000...")
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：
ServingHTTPonport8000...
127.0.0.1--[12/Apr/201616:44:17]"GET/HTTP/1.1"2000
Traceback(mostrecentcalllast):
File"C:\Python34\lib\wsgiref\handlers.py",line138,inrun
self.finish_response()
File"C:\Python34\lib\wsgiref\handlers.py",line181,infinish_response
self.write(data)
File"C:\Python34\lib\wsgiref\handlers.py",line267,inwrite
"write()argumentmustbeabytesinstance"
AssertionError:write()argumentmustbeabytesinstance
127.0.0.1--[12/Apr/201616:44:17]"GET/HTTP/1.1"50059
Traceback(mostrecentcalllast):
File"C:\Python34\lib\wsgiref\handlers.py",line138,inrun
self.finish_response()
File"C:\Python34\lib\wsgiref\handlers.py",line181,infinish_response
self.write(data)
File"C:\Python34\lib\wsgiref\handlers.py",line267,inwrite
"write()argumentmustbeabytesinstance"
AssertionError:write()argumentmustbeabytesinstance
Duringhandlingoftheaboveexception,anotherexceptionoccurred:
Traceback(mostrecentcalllast):
File"C:\Python34\lib\wsgiref\handlers.py",line141,inrun
self.handle_error()
File"C:\Python34\lib\wsgiref\handlers.py",line369,inhandle_error
self.finish_response()
File"C:\Python34\lib\wsgiref\handlers.py",line181,infinish_response
self.write(data)
File"C:\Python34\lib\wsgiref\handlers.py",line275,inwrite
self.send_headers()
File"C:\Python34\lib\wsgiref\handlers.py",line332,insend_headers
ifnotself.origin_serverorself.client_is_modern():
File"C:\Python34\lib\wsgiref\handlers.py",line345,inclient_is_modern
returnself.environ['SERVER_PROTOCOL'].upper()!='HTTP/0.9'
TypeError:'NoneType'objectisnotsubscriptable
Duringhandlingoftheaboveexception,anotherexceptionoccurred:
Traceback(mostrecentcalllast):
----------------------------------------
Exceptionhappenedduringprocessingofrequestfrom('127.0.0.1',60566)
File"C:\Python34\lib\socketserver.py",line305,in_handle_request_noblock
self.process_request(request,client_address)
File"C:\Python34\lib\socketserver.py",line331,inprocess_request
self.finish_request(request,client_address)
File"C:\Python34\lib\socketserver.py",line344,infinish_request
self.RequestHandlerClass(request,client_address,self)
File"C:\Python34\lib\socketserver.py",line673,in__init__
self.handle()
File"C:\Python34\lib\wsgiref\simple_server.py",line133,inhandle
handler.run(self.server.get_app())
File"C:\Python34\lib\wsgiref\handlers.py",line144,inrun
self.close()
File"C:\Python34\lib\wsgiref\simple_server.py",line35,inclose
self.status.split('',1)[0],self.bytes_sent
AttributeError:'NoneType'objecthasnoattribute'split'
----------------------------------------
----------------------------------------
Exceptionhappenedduringprocessingofrequestfrom('127.0.0.1',60568)
----------------------------------------
127.0.0.1--[12/Apr/201616:44:18]"GET/HTTP/1.1"2000
Traceback(mostrecentcalllast):
File"C:\Python34\lib\wsgiref\handlers.py",line138,inrun
self.finish_response()
File"C:\Python34\lib\wsgiref\handlers.py",line181,infinish_response
self.write(data)
File"C:\Python34\lib\wsgiref\handlers.py",line267,inwrite
"write()argumentmustbeabytesinstance"
AssertionError:write()argumentmustbeabytesinstance
127.0.0.1--[12/Apr/201616:44:18]"GET/HTTP/1.1"50059
Traceback(mostrecentcalllast):
File"C:\Python34\lib\wsgiref\handlers.py",line138,inrun
self.finish_response()
File"C:\Python34\lib\wsgiref\handlers.py",line181,infinish_response
self.write(data)
File"C:\Python34\lib\wsgiref\handlers.py",line267,inwrite
"write()argumentmustbeabytesinstance"
AssertionError:write()argumentmustbeabytesinstance
Duringhandlingoftheaboveexception,anotherexceptionoccurred:
Traceback(mostrecentcalllast):
File"C:\Python34\lib\wsgiref\handlers.py",line141,inrun
self.handle_error()
File"C:\Python34\lib\wsgiref\handlers.py",line369,inhandle_error
self.finish_response()
File"C:\Python34\lib\wsgiref\handlers.py",line181,infinish_response
self.write(data)
File"C:\Python34\lib\wsgiref\handlers.py",line275,inwrite
self.send_headers()
File"C:\Python34\lib\wsgiref\handlers.py",line332,insend_headers
ifnotself.origin_serverorself.client_is_modern():
File"C:\Python34\lib\wsgiref\handlers.py",line345,inclient_is_modern
returnself.environ['SERVER_PROTOCOL'].upper()!='HTTP/0.9'
TypeError:'NoneType'objectisnotsubscriptable
Duringhandlingoftheaboveexception,anotherexceptionoccurred:
Traceback(mostrecentcalllast):
File"C:\Python34\lib\socketserver.py",line305,in_handle_request_noblock
self.process_request(request,client_address)
File"C:\Python34\lib\socketserver.py",line331,inprocess_request
self.finish_request(request,client_address)
File"C:\Python34\lib\socketserver.py",line344,infinish_request
self.RequestHandlerClass(request,client_address,self)
File"C:\Python34\lib\socketserver.py",line673,in__init__
self.handle()
File"C:\Python34\lib\wsgiref\simple_server.py",line133,inhandle
handler.run(self.server.get_app())
File"C:\Python34\lib\wsgiref\handlers.py",line144,inrun
self.close()
File"C:\Python34\lib\wsgiref\simple_server.py",line35,inclose
self.status.split('',1)[0],self.bytes_sent
AttributeError:'NoneType'objecthasnoattribute'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",line138,inrun self.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",line181,infinish_response self.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：
asserttype(data)isbytes,\ "write()argumentmustbeabytesinstance"
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毛票票。
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