import configparser
from dataclasses import dataclass


@dataclass
class Sections:
    raw_sections: dict

    def __post_init__(self):
        for section_key, section_value in self.raw_sections.items():
            setattr(self, section_key, SectionContent(section_value.items()))

@dataclass
class SectionContent:
    raw_section_content: dict

    def __post_init__(self):
        for section_content_k, section_content_v in self.raw_section_content:
            setattr(self, section_content_k, section_content_v)

class Config(Sections):
    def __init__(self, raw_config_parser):
        Sections.__init__(self, raw_config_parser)


conf = configparser.ConfigParser()
conf.read('some_config_file.conf')

new_config = Config(conf)

# [mysection]
# mykey = 1
print(new_config.mysection.mykey) # output: 1