Pythonでjson作成

import json

str = {
	"東京":{
		"population": 1300,
		"capital": "東京"
	},
	"北海道": {
		"population": 538,
		"capital": "札幌市"
	},
	"沖縄":{
		"population": 143,
		"capital": "那覇市"
	}
}

with open("population.json", "w") as f:
	json.dump(str, f, ensure_ascii=False)

{“東京”: {“population”: 1300, “capital”: “東京”}, “北海道”: {“population”: 538, “capital”: “札幌市”}, “沖縄”: {“population”: 143, “capital”: “那覇市”}}

なるほどー