1. 新建json文件
- 打开记事本，重命名为
.json后缀
使用的样例如下，注意看json文件格式：
{"server":{"host": "example.com","port": 443,"protocol": "https"},"authentication":{"username":"your_name","password":"your_psw"},"timeout":30,"headers":{"content-type":"application/json","user-agent":"your user agent"}
}
2. 用python打开json文件
- json模块为python自带，不需要安装
load可以把json文件加载出来dict可以把json格式变为字典
import json# fill path
file_path = r'json_test\my_json_file.json'# open json file
with open(file_path, 'r') as file:# load json datadata = json.load(file)print(data)# convert json to dictionary
data_dic = dict(data)
print(data_dic)
3. 使用json数据
# use json data
my_host = data['server']['host']
my_auth = data['authentication']['username']
print(my_host)
print(my_auth)
4. 改变json数据内容
# update the values in json data
data['server']['host'] = 'new_host'
data['authentication']['username'] = 'new_username'
5. 把文件变回json格式
- 用
dumps
# convert the update values back to json format
update_json = json.dumps(data)
6. 把更新后的json文件写入为新的json文件
# update file store path
output_new_json_file_path = r'json_test\my_update_json_file.json'# write into
with open(output_new_json_file_path, 'w') as file:file.write(update_json)print("json file update successfully!")
7. 整体代码
import json# fill path
file_path = r'json_test\my_json_file.json'# open json file
with open(file_path, 'r') as file:# load json datadata = json.load(file)print(data)# convert json to dictionary
data_dic = dict(data)
print(data_dic)# use json data
my_host = data['server']['host']
my_auth = data['authentication']['username']
print(my_host)
print(my_auth)# update the values in json data
data['server']['host'] = 'new_host'
data['authentication']['username'] = 'new_username'# convert the update values back to json format
update_json = json.dumps(data)# update file store path
output_new_json_file_path = r'json_test\my_update_json_file.json'# write into
with open(output_new_json_file_path, 'w') as file:file.write(update_json)print("json file update successfully!")
9. 新建的json文件一览
