1. 字典

字典是一种数据结构,是python中的一种数据类型;它是一种可变类型,可以存储任意类型的数值,以 key:value 的形式存储数据,但是 key 可以是任意可hash的对象 ,在一个字典中不允许出现两个相同的key值,如果出现,后面一个key值会覆盖前面的key值。

2. Json

Json是一种打包的数据格式,本质上是字符串,也是按照 key:value 来存储数据,key 只能时字符串,且可以有序、重复;必须使用双引号作为key或者值的边界符,不能使用单引号,使用单引号或者不使用引号会使解析错误。可以被解析为字典或者其他形式。

2.1 json.loads函数的使用,将字符串转化为字典

a = {'a':'1',
     'b':'2',
     'c':'3'
     }
print(type(a))

import json
aa = json.loads( '{"age": "12"}')    #参数是str行,loads之后,变成dict字典了
print(aa)
print(type(aa))

2.2 json.dumps()函数的使用,将字典转化为字符串

import json

# json.dumps()函数的使用,将字典转化为字符串
dict1 = {"age": "12"}
json_info = json.dumps(dict1)
print("dict1的类型:"+str(type(dict1)))
print("通过json.dumps()函数处理:")
print("json_info的类型:"+str(type(json_info)))

                       

GitHub 加速计划 / js / json
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适用于现代 C++ 的 JSON。
最近提交(Master分支:3 个月前 )
f06604fc * :page_facing_up: bump the copyright years Signed-off-by: Niels Lohmann <mail@nlohmann.me> * :page_facing_up: bump the copyright years Signed-off-by: Niels Lohmann <mail@nlohmann.me> * :page_facing_up: bump the copyright years Signed-off-by: Niels Lohmann <niels.lohmann@gmail.com> --------- Signed-off-by: Niels Lohmann <mail@nlohmann.me> Signed-off-by: Niels Lohmann <niels.lohmann@gmail.com> 2 天前
d23291ba * add a ci step for Json_Diagnostic_Positions Signed-off-by: Harinath Nampally <harinath922@gmail.com> * Update ci.cmake to address review comments Signed-off-by: Harinath Nampally <harinath922@gmail.com> * address review comment Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix typo in the comment Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix typos in ci.cmake Signed-off-by: Harinath Nampally <harinath922@gmail.com> * invoke the new ci step from ubuntu.yml Signed-off-by: Harinath Nampally <harinath922@gmail.com> * issue4561 - use diagnostic positions for exceptions Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci_test_documentation check Signed-off-by: Harinath Nampally <harinath922@gmail.com> * address review comments Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci check failures for unit-diagnostic-postions.cpp Signed-off-by: Harinath Nampally <harinath922@gmail.com> * improvements based on review comments Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix const correctness string Signed-off-by: Harinath Nampally <harinath922@gmail.com> * further refinements based on reviews Signed-off-by: Harinath Nampally <harinath922@gmail.com> * add one more test case for full coverage Signed-off-by: Harinath Nampally <harinath922@gmail.com> * ci check fix - add const Signed-off-by: Harinath Nampally <harinath922@gmail.com> * add unit tests for json_diagnostic_postions only Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci_test_diagnostics Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci_test_build_documentation check Signed-off-by: Harinath Nampally <harinath922@gmail.com> --------- Signed-off-by: Harinath Nampally <harinath922@gmail.com> 2 天前
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