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[英]Confusion about a simple python wsgi server (wsgiref.simple_server)
[英]Serving JPG files via wsgiref.simple_server in Python 3 - “write() argument must be a bytes instance”
我試圖在Python3中創建一個HTTP服務器。 首先,我只想要一個服務於單個JPG文件的服務器。 這是我的代碼:
from wsgiref.simple_server import make_server
def simple_app(environ, start_response):
headers = [('Content-type', 'image/jpeg')]
start_response('200 OK', headers)
data = b''
filename = r'sunset-at-dusk.jpg'
with open(filename, 'rb', buffering=0) as f:
data = f.readall()
print(type(data)) #<class 'bytes'>
return data
httpd = make_server('', 8001, simple_app)
print("Serving on port 8001...")
httpd.serve_forever()
當我嘗試通過HTTP訪問服務器時,出現以下錯誤。
127.0.0.1 - - [01/Jun/2016 08:37:43] "GET / HTTP/1.1" 200 0 Traceback (most recent call last): File "C:\Anaconda3\lib\wsgiref\handlers.py", line 138, in run
self.finish_response() File "C:\Anaconda3\lib\wsgiref\handlers.py", line 180, in finish_response
self.write(data) File "C:\Anaconda3\lib\wsgiref\handlers.py", line 266, in write
"write() argument must be a bytes instance" AssertionError: write() argument must be a bytes instance
'sunset-at-dusk.jpg'是與我的腳本位於同一文件夾中的有效JPG文件。
我究竟做錯了什么?
將數據作為列表返回
return [data]
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