Python transforms a class object into JSON

If you convert a dictionary to JSON, you're familiar with it, but what if you convert the class class to a JSON object at the advanced point?

1, first define a class

# define a student class class Student (object):     def __init__ (Self,name,age,score):         = name                = age = Score

2, when instantiating the student class, pass in 3 parameters

# instantiate This object s = Student ('hello', 20,80)

3, use JSON transform s to instantiate the object to see if it succeeds

Print (Json.dumps (s))

4, Output: Direct reporting of TypeError type error, do not allow to directly convert the class to JSON

  " C:\Python27\lib\json\encoder.py " inch default     Raise " is not JSON serializable "  <__main__is not 1

Solution:

1, define a conversion function

# define a conversion function to change the student class to a type acceptable to JSON def student2dict (STD):     return {        'name': std.name,        'age'  : std.age,        'score': Std.score    }

2, in JSON print out

# This allows the class object to be converted to JSON, which uses the JSON default property to invoke the Student2dict function Print (Json.dumps (s,default=student2dict))

3, view the output so that the class object can be correctly transmitted through JSON

C:\Python27\python.exe e:/python/testspider/fibon.py{"age""  Score"" "name" "Hello"}

Python transforms a class object into JSON