def parse()

in util-cell-enumerate.py [0:0]


def parse(path):
    with open(path,'r',encoding='utf-8') as f:
      data = json.load(f)
    data['cells'] = [ renumber(x) for x in data['cells']]
    with open(path,'w',encoding='utf-8') as f:
      json.dump(data,fp=f,indent=1,ensure_ascii=False) # indent=1 is surprising, but that seems to be default.
      f.write('\n')
    return