Assume unspecified surface coeffs = 0 in PyAPI
Assume unspecified surface coeffs = 0 in PyAPI

mit-crpg/openmc,paulromano/openmc,johnnyliu27/openmc,mjlong/openmc,samuelshaner/openmc,wbinventor/openmc,wbinventor/openmc,amandalund/openmc,smharper/openmc,samuelshaner/openmc,walshjon/openmc,paulromano/openmc,liangjg/openmc,shikhar413/openmc,shikhar413/openmc,liangjg/openmc,liangjg/openmc,amandalund/openmc,smharper/openmc,smharper/openmc,wbinventor/openmc,smharper/openmc,walshjon/openmc,johnnyliu27/openmc,mit-crpg/openmc,amandalund/openmc,shikhar413/openmc,walshjon/openmc,bhermanmit/openmc,samuelshaner/openmc,kellyrowland/openmc,kellyrowland/openmc,walshjon/openmc,samuelshaner/openmc,mit-crpg/openmc,paulromano/openmc,paulromano/openmc,amandalund/openmc,shikhar413/openmc,johnnyliu27/openmc,mjlong/openmc,bhermanmit/openmc,johnnyliu27/openmc,wbinventor/openmc,liangjg/openmc,mit-crpg/openmc