filterwarnings

[oyamad]

It seems that once quantecon is imported, the warnings the user issues by warnings.warn are ignored, probably because of warnings.filterwarnings('ignore') in arma.py (and there is also warnings.simplefilter("ignore", RuntimeWarning) in matrix_eqn.py).

If it is indeed the case, this is problematic. Is there any way to put warnings.simplefilter in a "local scope"?

[oyamad]

>>> import warnings
>>> warnings.warn('warning')
__main__:1: UserWarning: warning
>>> import quantecon
>>> warnings.warn('warning')
>>>

[sglyon]

We should definitely not be silencing all warnings. I haven't looked, but do we know why we are even expecting to have warnings in arma.py?

[mmcky]

Comment in arma.py

# == Ignore unnecessary warnings concerning casting complex variables back to
# floats == #

[mmcky]

Comment in matrix_eqn.py

# == Suppress warnings from checking conditioning of matrices == #

[mmcky]

I propose we remove the warnings.filterwarnings('ignore') and then deal with any warnings that arise.

[mmcky]

Closing this issue as discussion has moved to PR #231