downloading

[jeremy rutman]

There's an example for downloading with the line

with io.open('/home/pi/skygrow/test_images/%s.jpg' % addr,'w') as output:

this actually breaks a pipe in our setup (5 servers, raspi2 client)
This however works:

with io.open('/home/pi/skygrow/test_images/%s.jpg' % addr,'wb') as output:

[Dave Jones]

Ah, found it - if it's the one you're referring to it's actually missing the file mode entirely (which is why it fails rather than working but producing a corrupt file as the default file mode is 'r'). For my own reference: it's the first example in batch.rst - I'll have this fixed for the next release