Flatten python dict

flatten_dict.py

def flatten_dict(data, sep="."):
    r = {}

    for k, v in data.items():
      if not isinstance(v, dict):
        r[k] = v
        continue
      
      for kk, vv in flatten_dict(v, sep).items():
        r[f"{k}{sep}{kk}"] = vv
    
    return r