Kazuya Kitaguchi

import json
parm = pwd().parm("ramp")
ramp = parm.evalAsRamp()
interpMap = {
    hou.rampBasis.Constant:"constant",
    hou.rampBasis.Linear:"linear",
    hou.rampBasis.CatmullRom:"cubic",
    hou.rampBasis.MonotoneCubic:"monotonecubic",
    hou.rampBasis.Bezier:"bezier",
    hou.rampBasis.BSpline:"bspline",
    hou.rampBasis.Hermite:"hermite"
    }
dict = {}
dict["colortype"]="RGB"
dict["points"]=[len(ramp.keys())]

keylist = []
for i, key in enumerate(ramp.keys()):
    values = list(ramp.values()[i])
    values.append(1.0)
    data = { "t": key,
             "rgba": values,
             "basis": interpMap[ramp.basis()[i]]
             }    
    dict["points"].append(data)

jsonString = json.dumps(dict)

return jsonString