jpython 字典转字Json时常见问题

• 字典转json时，默认汉子变成ascii 字符码，而不是中文，如果你需要中文时需要添加参数【ensure_ascii=False】

import json

city = {
    "cityCode": "110000",  #
    "cityName": "北京"}

print(json.dumps(city))
# >>> {"cityCode": "110000", "cityName": "\u5317\u4eac"}

print(json.dumps(city, ensure_ascii=False)) # 禁用 ensure_ascii

#>>> {"cityCode": "110000", "cityName": "北京"}

• 字典转json时，默认会在冒号，逗号后面添加空格，如果去掉空格需要添加参数【separators=(',', ':')】

import json

city = {
    "cityCode": "110000",  #
    "cityName": "北京"}

print(json.dumps(city, ensure_ascii=False))
# >>> {"cityCode": "110000", "cityName": "北京"}

print(json.dumps(city, ensure_ascii=False, separators=(',', ':')))  # 去掉"," ,":"后面空格
# # >>> {"cityCode":"110000","cityName":"北京"}

• 字典转json时格式化输出，添加参数【indent=2】

import json

city = {
    "cityCode": "110000",  #
    "cityName": "北京"}

print(json.dumps(city, ensure_ascii=False))
# >>> {"cityCode": "110000", "cityName": "北京"}

print(json.dumps(city, ensure_ascii=False, indent=2))   # 格式后缩进2个字符，indent的值为非负整数；
# # >>> {
#   "cityCode": "110000",
#   "cityName": "北京"
# }

• 字典转json时按key进行排序，添加参数【sort_keys=True】

import json

city = {
    "Name": "北京",  #
    "Code": "110000",  #
}

print(json.dumps(city, ensure_ascii=False))
# >>> {"Name": "北京", "Code": "110000"}

print(json.dumps(city, ensure_ascii=False, sort_keys=True)) # 正向排序
#>>> {"Code": "110000", "Name": "北京"}