pandas.stats.ols.MovingOLS._calc_betas incompatibility issue with newer numpy

[wangshun98]

numpy version 1.8.2
pandas version 0.14.1

In pandas/stats/ols.py:821, we have:
mask = -np.isnan(betas).any(axis=1)

This causes problem with newer numpy which deprecated negative unary operator (-) on boolean arrays. I got this following error when running into this line:
DeprecationWarning: numpy boolean negative (the unary - operator) is deprecated, use the bitwise_xor (the ^ operator) or the logical_xor function instead.

When I change "-" to "~", the problem goes away. It's minor, but hope we can incorporate this into next pandas update. Thanks.

[jreback]

thought we got all of these.
we DO test with numpy master with deprecations turned on, must have missed this one.

pull-request to fix?

[wangshun98]

Sorry. I'm at work and don't have github access. Do you mind doing the PR? Thanks

[jreback]

@wangshun98 do when you can

[wangshun98]

Kinda new to github. I can't seem to create a branch. Is that a prerequisite to a PR?

[jreback]

https://github.com/pydata/pandas/wiki/Using-Git

[luis-ortiz]

Just saw this in 0.16.2 . I'll do a pull request for this shortly.

[mroeschke]

I believe this issue can be closed from this PR.
2113672#diff-1e25b8d60d53005c3c7cb6612f2b41a6

[jreback]

yep