python中json相关方法

json

• json.load(file)

  • 将文件中的字符串读出来，转换为json形式的列表等

  [{"age": 20, "name": "tome", "sex": "male"}, {"age": 10, "name": "jerry", "sex": "female"}]

  data = json.load(open(‘../datas/json_dump.json‘, ‘rt‘))
  print(data)
  print(type(data))

  [{‘age‘: 20, ‘name‘: ‘tome‘, ‘sex‘: ‘male‘}, {‘age‘: 10, ‘name‘: ‘jerry‘, ‘sex‘: ‘female‘}]
  <class ‘list‘>

   

• json.loads(str)

  • 将字符串转换为json形式的列表等

  str1 = ‘[{"age": 20, "name": "tome", "sex": "male"}, {"age": 10, "name": "jerry", "sex": "female"}]‘
  ?
  data = json.loads(str1)
  print(data)
  print(type(data))

  [{‘age‘: 20, ‘name‘: ‘tome‘, ‘sex‘: ‘male‘}, {‘age‘: 10, ‘name‘: ‘jerry‘, ‘sex‘: ‘female‘}]
  <class ‘list‘>

   

• json.dump(pyton_obj)

  • 读取数据，以字符串的形式存储在文件中

  list1 = [{
          ‘name‘: ‘tome‘,
          ‘age‘: 20,
          ‘sex‘: ‘male‘
          }, {
          ‘name‘: ‘jerry‘,
          ‘age‘: 10,
          ‘sex‘: ‘female‘
          }]
  ?
  data = json.dump(list1, open(‘../datas/json_dump.json‘, ‘w‘), sort_keys=True)

  [{"age": 20, "name": "tome", "sex": "male"}, {"age": 10, "name": "jerry", "sex": "female"}]

   

• json.dumps(pyton_obj)

  • 把符合json规则的列表等转换为字符串

  list1 = [{
          ‘name‘: ‘tome‘,
          ‘age‘: 20,
          ‘sex‘: ‘male‘
          }, {
          ‘name‘: ‘jerry‘,
          ‘age‘: 10,
          ‘sex‘: ‘female‘
          }]
  ?
  data = json.dumps(list1, sort_keys=True)
  ?
  print(data)
  print(type(data))

  [{"age": 20, "name": "tome", "sex": "male"}, {"age": 10, "name": "jerry", "sex": "female"}]
  <class ‘str‘>

•