[Python] How to initialize ConfigParser with structured dict?

I want to initialize configparser with structured dict like:

from configparser import ConfigParser
from sys import stdout

structured_dict = dict(section1=dict(option1=1, option2=2, option3=3))
config = ConfigParser(structured_dict)
config.write(stdout)
# my expected result:
# [section1]
# option1=1
# option2=2
# option3=3
# ... but nothing to show

Environment

• Python 3.10

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