importjson# 定义一个字典data={"name":"Alice","age":20,"city":"New York"}# 将字典转换为JSON字符串json_str=json.dumps(data)# 将JSON字符串转换为Python对象python_obj=json.loads(json_str)# 将Python对象转换为格式化的JSON字符串pretty_json_str=json.dumps(python_obj,indent=4)# 打印格式化的JSO...
dumps解码的过程,是把python对象转换成json对象的一个过程,常用的两个函数是dumps和dump函数。两个函数的唯一区别就是dump把python对象转换成json对象生成一个fp的文件流,而dumps则是生成了一个字符串。 解码中常用的参数: Skipkeys:默认值是False,如果dict的keys内的数据不是python的基本类型(str,unicode...
It’s clear from the output that we have to pass the indent value to get the JSON data into a pretty printed format.
1.0]' >>> ''.join(json.JSONEncoder(default=encode_complex).iterencode(2 + 1j)) '[2.0, 1.0]' Using json.tool from the shell to validate and pretty-print:: $ echo '{"json":"obj"}' | python -m json.tool { "json": "obj" }...
{"a": 23,"b": 42,"c": 12648430}#Note this only works with dicts containing#primitive types (check out the "pprint" module):>>> json.dumps({all:'yup'}) TypeError: keys must be a string In most cases I'd stick to the built-in "pprint" module though :-)...
json模块 在之前的request库介绍中就提到过,现在99%的接口返回的数据都是json格式,在python中,有专门处理json格式的模块——json模块,在python2.6之后的版本都自带了这一个模块,直接导入import json即可。json模块提供了四个功能:dumps、loads、dump、load,用于字符串和python数据类型之间进行转换。
def write_to_json(): num_dict={"num":num_list} if os.stat("data.json").st_size == 0: f = open("data.json", "w") json.dump(num_dict, f, indent=2) f.close() else: f = open("data.json","r+") data=json.load(f) ...
JSON is a good data format to use with Python as it’s human-readable and straightforward to serialize and deserialize, which makes it ideal for use in APIs and data storage. You write JSON with Python using json.dump() to serialize data to a file. You can minify and prettify JSON usin...
importjson data={'name':'马牛逼','sex':'female','age':88}json_dic2=json.dumps(data,sort_keys=True,indent=2,separators=(',',':'),ensure_ascii=False)print(json_dic2) json.dump和json.load不常用,主要是针对文件操作进行序列化和反序列化 ...
import json f = open('file','w') json.dump({'国籍':'中国'},f) ret = json.dumps({'国籍':'中国'}) f.write(ret+'\n') json.dump({'国籍':'美国'},f,ensure_ascii=False) ret = json.dumps({'国籍':'美国'},ensure_ascii=False) ...