Use print_ from six for doctests.
Use print_ from six for doctests.

cmshobe/landlab,laijingtao/landlab,Carralex/landlab,SiccarPoint/landlab,decvalts/landlab,csherwood-usgs/landlab,ManuSchmi88/landlab,ManuSchmi88/landlab,amandersillinois/landlab,Carralex/landlab,Carralex/landlab,RondaStrauch/landlab,cmshobe/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,cmshobe/landlab,decvalts/landlab,amandersillinois/landlab,landlab/landlab,laijingtao/landlab,csherwood-usgs/landlab,SiccarPoint/landlab,RondaStrauch/landlab,landlab/landlab,landlab/landlab