This page tracks porting progress of Python 3. The epic covering the initial port was 

PackageJIRAOwner
baseTim Jenness
pex_exceptionsTim Jenness
utilsTim Jenness
pex_policyTim Jenness
daf_baseTim Jenness
pex_loggingTim Jenness
pex_configTim Jenness
logTim Jenness
ndarrayTim Jenness
daf_persistenceTim Jenness
afwTim Jenness
skymapUnknown User (jmatt)
geomPaul Price
daf_butlerUtilsUnknown User (npease)
psfexDone, no python sourceNate Lust
obs_testRussell Owen
shapelet Nate Lust
skypixPaul Price
pipe_baseRussell Owen
db

 

 
cat  
mysqlpythonBrian Van Klaveren
display_ds9David Shupe
coadd_utils  
ctrl_eventsSteve Pietrowicz
ctrl_pool  
ctrl_orcaSteve Pietrowicz
ctrl_provenance  
ctrl_statsSteve Pietrowicz
ctrl_executeSteve Pietrowicz
pykg_configTim Jenness
meas_algorithms  
coadd_chisquared  
esutil