def merge_dicts()

in lib/core/config.py [0:0]

• 25 lines of code
• 10 McCabe index (conditional complexity)

def merge_dicts(dict_a, dict_b):
    from ast import literal_eval
    for key, value in dict_a.items():
        if key not in dict_b:
            raise KeyError('Invalid key in config file: {}'.format(key))
        if type(value) is dict:
            dict_a[key] = value = AttrDict(value)
        if isinstance(value, str):
            try:
                value = literal_eval(value)
            except BaseException:
                pass
        # the types must match, too
        old_type = type(dict_b[key])
        if old_type is not type(value) and value is not None:
                raise ValueError(
                    'Type mismatch ({} vs. {}) for config key: {}'.format(
                        type(dict_b[key]), type(value), key)
                )
        # recursively merge dicts
        if isinstance(value, AttrDict):
            try:
                merge_dicts(dict_a[key], dict_b[key])
            except BaseException:
                raise Exception('Error under config key: {}'.format(key))
        else:
            dict_b[key] = value