[IPython-dev] Ipython Notebook Showing Warnings In Wrong Order

[Maximilian Albert]

Hi Justin,

The order that warning messages are printed in Ipython Notebooks in the
> presence of a print statement is not as expected. Take for example:
>
>
> No the order is not wrong, warning send string to stderr, print to stdout.
> Nothing guaranties the "order" in which they appear.
>

That said, you can try to flush the buffers immediately. The following
produces the expected order for me in the notebook as well:

==>
import sys
import warnings
warnings.simplefilter('always')

for x in range(10):
    warnings.warn('Warning %d' % (x))
    sys.stderr.flush()
    print x
    sys.stdout.flush()
<==

Cheers,
Max
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