from email.parser import BytesFeedParser
import email.policy

def main():
	eml_string = 'From: Nobody <""@example.org>'
	parser = BytesFeedParser(policy = email.policy.default)
	parser.feed(eml_string.encode())
	msg = parser.close()
	print(msg.get('From').addresses[0].addr_spec)

if __name__ == '__main__':
	main()