Fix build_fringe_rate_profiles
bug when number of pols = 1
#903
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This PR fixes a small bug where
.squeeze()
, which is designed to eliminate extraneous dimensions in pyuvdata objects, can also squeeze out dimensions in theflag_array
when the number of polarizations is 1. This PR prevents that by first doing a np.all over the polarization axis, as was intended, then squeezing (which does nothing whenfuture_array_shapes == True
).This PR also fixes a bunch of pep8 stuff.