要用JSON解码复杂对象,请使用object_hook参数检查JSON字符串是否包含复杂对象。例,
import json
# 函数检查JSON字符串是否包含复杂对象
def is_complex(objct):
if '__complex__' in objct:
return complex(objct['real'], objct['img'])
return objct
# 使用带有object_hook的json加载方法用于检查是否复杂的对象
complex_object =json.loads('{"__complex__": true, "real": 4, "img": 5}', object_hook = is_complex)
#此处我们没有传递复杂对象,因此将其转换为字典
simple_object =json.loads('{"real": 6, "img": 7}', object_hook = is_complex)
print("Complex_object......",complex_object)
print("Without_complex_object......",simple_object)
输出:
Complex_object ......(4 + 5j)
Without_complex_object ...... {'real':6,'img':7}
JSONEncoder类用于在执行编码时对任何Python对象进行序列化。它包含三种不同的编码方法,分别是
借助JSONEncoder类的encode()方法,我们还可以对任何Python对象进行编码。
# import JSONEncoder class from json
from json.encoder import JSONEncoder
colour_dict = { "colour": ["red", "yellow", "green" ]}
# directly called encode method of JSON
JSONEncoder().encode(colour_dict)
输出:
'{"colour": ["red", "yellow", "green"]}'