def flat_to_nested()

in summarize_from_feedback/utils/hyperparams.py [0:0]

• 17 lines of code
• 7 McCabe index (conditional complexity)

def flat_to_nested(flat_dict, separator="."):
    nested_dict = dict()
    for k, v in flat_dict.items():
        parts = k.split(separator)
        d = nested_dict
        subkey = None
        for part in parts[:-1]:
            subkey = part if subkey is None else subkey + separator + part
            if part not in d:
                d[part] = dict()
            if not isinstance(d[part], dict):
                raise ValueError(f"Set conflicting values for {subkey}")
            d = d[part]
        if parts[-1] in d:
            raise ValueError(f"Set conflicting values for {k}")
        d[parts[-1]] = v
    return nested_dict