def build_args(self, cmds):
args = collections.defaultdict(dict)
strats = filter(Strat.is_valid, cmds.keys())
for strat in strats:
params = cmds[strat]
strat = Strat.get_strat(strat)
args["strategy"][strat] = params
masks = filter(Mask.is_valid, cmds.keys())
for mask in masks:
args["masks"][mask] = cmds[mask]
return args
