仅作为操作记录，大佬请跳过。

python字典的索引

a='{"corpus_no":"6903467035323025977","err_msg":"success.","err_no":0,"result":["北京科技馆。"],"sn":"924145768761607338673"}'
a01=eval(a)	#转为字典类型

print(a01.keys())
print(a01.values())
print(a01.items())
print(a01['result'])

展示：

感谢大佬博主文章：

传送门1

传送门2

关于循环索引python的字典

for jober in employee_dict.items():
    print("%s\t\t%s\t\t%s\t\t%s" % (jober[0],
                                    jober[1]['name'],
                                    jober[1]['sex'],
                                    jober[1]['salary']))
    # print(jober)

或者自己的方法：

num=list(content.keys())
alldata = list(content.values())

for i in range(len(alldata)):
    f.write(num[i]);f.write('           ')
    f.write(alldata[i]['name']);f.write('          ')
    f.write(alldata[i]['sex']);f.write('          ')
    f.write(alldata[i]['salary']);f.write('\n')

python的字典索引key

dic_areas_key是字典

dic_areas_key=list(dic_areas.keys())
dic_areas_value=list(dic_areas.values())
print('dic_areas.keys:',dic_areas_key,'\n','dic_areas.values:',dic_areas_value)

# keys[values.index("bar")]
dic_areas_key[dic_areas_value.index(20398)]

参考：
字典key和value转list传送门