> I was expecting the following to catch the DeprecationWarning
>
> import warnings
>
> warnings.filterwarnings('error',category=DeprecationWarning)
> try:
> print (exp(x)*exp(3*x)).simplify_exp() #example with exp function
> except DeprecationWarning:
> print 'MegBook.py say: exercise needs review!'
>
> but it does not. I still got
>
>
In Python the warning construct behaves a little differently. I think if
you use the "catch_warnings" context manager you'll be able at least test
if a warning occurred. See
https://docs.python.org/2/library/warnings.html#testing-warnings for
information.
import warnings
with warnings.catch_warnings(record=True) as w:
#
# do some things here that may cause a warning
#
if len(w) > 0:
print 'A warning was thrown'
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