Why can't my simple pyramid app work with pexpect?
I have a very simple pyramid app that serves as a simple static page. Let's say its name mypyramid
and uses the port 9999
.
If I run mypyramid in another Linux console manually, then I can use the following code to print the html line.
if __name__ == "__main__":
import urllib2
print 'trying to download url'
response = urllib2.urlopen('http://localhost:9999/index.html')
html = response.read()
print html
But I want to run mypyramid in the application automatically.
So, in another application, I used pexpect
mypyramid to run and then tried to get the html string from http://localhost:9999/index.html
.
def _start_mypyramid():
p = pexpect.spawn(command='./mypyramid')
return p
if __name__ == "__main__":
p = _start_mypyramid()
print p
print 'mypyramid started'
import urllib2
print 'trying to download url'
response = urllib2.urlopen('http://localhost:9999/index.html')
html = response.read()
print html
Mypyramid seems to have started successfully using pexpect
, as I can see the process listing is and has mypyramid started
been achieved.
However, the application hangs after trying to download url
, and I cannot get anything.
What solution? I mean, I thought I pexpect
would create a different process. If this is true then why is it stopping the html fetching?
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My guess is that the child returned by pexpect.spawn needs to communicate. He tries to write, but nobody reads, so the application stops. (I'm only guessing).
If you don't have a reason to use pexpect (which you probably don't if you're not communicating with the child process), why don't you just go for a standard module sub-process?
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