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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _setDefaults(configObj={}):
 """set up the default parameters to run drizzle build,single,units,wt_scl,pixfrac,kernel,fillval, rot,scale,xsh,ysh,blotnx,blotny,outnx,outny,data Used exclusively for unit-testing, if any are defined. """


    paramDict={"build":True,
              "single":True,
              "stepsize":10,
              "in_units":"cps",
              "wt_scl":1.,
              "pixfrac":1.,
              "kernel":"square",
              "fillval":999.,
              "maskval": None,
              "rot":0.,
              "scale":1.,
              "xsh":0.,
              "ysh":0.,
              "blotnx":2048,
              "blotny":2048,
              "outnx":4096,
              "outny":4096,
              "data":None,
              "driz_separate":True,
              "driz_combine":False}

    if(len(configObj) !=0):
        for key in configObj.keys():
            paramDict[key]=configObj[key]

    return paramDict