Undefined names in lalinference.bayespputils

Flake8 reports the following issues related to undefined objects (which would raise NameErrors when reached):

$ flake8 --select=F401,F821 lalinference/python/lalinference/bayespputils.py
lalinference/python/lalinference/bayespputils.py:1630:71: F821 undefined name 'post'
lalinference/python/lalinference/bayespputils.py:2188:50: F821 undefined name 'log'
lalinference/python/lalinference/bayespputils.py:2950:16: F821 undefined name 'self'
lalinference/python/lalinference/bayespputils.py:2954:16: F821 undefined name 'self'
lalinference/python/lalinference/bayespputils.py:3742:9: F821 undefined name 'math'
lalinference/python/lalinference/bayespputils.py:3813:27: F821 undefined name 'i'
lalinference/python/lalinference/bayespputils.py:3813:34: F821 undefined name 'i'
lalinference/python/lalinference/bayespputils.py:4053:24: F821 undefined name 'kdepdf'
lalinference/python/lalinference/bayespputils.py:4293:32: F821 undefined name 'locs'
lalinference/python/lalinference/bayespputils.py:4652:18: F821 undefined name 'levels'
lalinference/python/lalinference/bayespputils.py:4653:22: F821 undefined name 'Npts'
lalinference/python/lalinference/bayespputils.py:4654:22: F821 undefined name 'Npts'
lalinference/python/lalinference/bayespputils.py:4655:22: F821 undefined name 'Npts'
lalinference/python/lalinference/bayespputils.py:4656:13: F821 undefined name 'zvalues'
lalinference/python/lalinference/bayespputils.py:4656:28: F821 undefined name 'densort'
lalinference/python/lalinference/bayespputils.py:4658:13: F821 undefined name 'pp'
lalinference/python/lalinference/bayespputils.py:4658:24: F821 undefined name 'XS'
lalinference/python/lalinference/bayespputils.py:4658:28: F821 undefined name 'YS'
lalinference/python/lalinference/bayespputils.py:4658:32: F821 undefined name 'ZS'
lalinference/python/lalinference/bayespputils.py:4658:36: F821 undefined name 'zvalues'
lalinference/python/lalinference/bayespputils.py:4970:16: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:4971:18: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:4972:18: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:4974:39: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:4974:62: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:5222:12: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:5223:14: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:5224:14: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:5226:35: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:5226:58: F821 undefined name 'IFO'
lalinference/python/lalinference/bayespputils.py:5362:19: F821 undefined name 'greedyPoints'
lalinference/python/lalinference/bayespputils.py:5363:19: F821 undefined name 'greedyPoints'
lalinference/python/lalinference/bayespputils.py:5438:21: F821 undefined name '_burnin'
lalinference/python/lalinference/bayespputils.py:5540:106: F821 undefined name 'coincfile'
lalinference/python/lalinference/bayespputils.py:5540:120: F821 undefined name 'tiggers'
lalinference/python/lalinference/bayespputils.py:5950:36: F821 undefined name 'data'
lalinference/python/lalinference/bayespputils.py:6717:19: F821 undefined name 'exp'
lalinference/python/lalinference/bayespputils.py:7368:22: F821 undefined name 'exp'

It would be nice to get these fixed. The new flake8 linting will start complaining loudly about these as soon as that is merged.