Question
How do I stream content to the browser?
Answer
First, turn off debug mode in your ini file, or copy your development.ini file and uncomment the line:
When debug mode is on, streaming can't occur because the exception middleware needs to have the entire response finished first. Now that it's disabled, merely returning an iterator object or generator is sufficient to start streaming output.
Here's an example that sends a paragraph every 2 seconds:
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11 | import time
class StreamingController(object):
def output(self):
def output_pause():
num = 0
while 1:
num += 1
yield num
time.sleep(2)
return output_pause()
|
On loading /streaming/output, you should now see a number sent out every 2 seconds, continuing on forever.
Posted by
Is this syntax only for Pylons 0.9.6? If yes, how to do that with old Response object returning?