Multi nested key dictionary to single dictionary

MultiToSingleDict.py

import pandas as pd



class MultiToSingleDict:
    def __init__(self, data, sep='.'):
        self._data = data
        self._sep = sep
        self._out = {}

        for k, v in self._recursive(data):
            self._out[k] = v

    def _recursive(self, data, parent=None):
        for key, value in data.items():
            if isinstance(value, dict):
                if not parent:
                    tmp = key
                else:
                    tmp = f"{parent}{self._sep}{key}"
                yield from self._recursive(value, parent=tmp)
            elif isinstance(value, list) or isinstance(value, tuple):
                value = ", ".join(value)
                if not parent:
                    yield f"{key}", value
                else:
                    yield f"{parent}{self._sep}{key}", value
            else:
                if not parent:
                    yield f"{key}", value
                else:
                    yield f"{parent}{self._sep}{key}", value

    def out_series(self):
        return pd.Series(self._out)

    def out_dict(self):
        return self._out