python报错：ValueError: dictionary update sequence element #1 has length 6; 2 is required解决

一、问题描述，直接使用dict方法转换字符串为字典

>>> a = '{"sdf":"sdf"}'
>>> dict(a)
Traceback (most recent call last):
  File "", line 1, in 
ValueError: dictionary update sequence element #0 has length 1; 2 is required

>>> a = '{"sd":"ed"}'
>>> dict(a)
Traceback (most recent call last):
  File "", line 1, in 
ValueError: dictionary update sequence element #0 has length 1; 2 is required

二、问题解决
使用eval

>>> a = '{"sdf":"sdf"}'
>>> eval(a)
{'sdf': 'sdf'}

原文链接地址：
https://blog.csdn.net/weixin_40894428/article/details/80683137
字符串转字典要用eval（），这个方法很多书上都没有介绍，
eval转换字符串、列表、字典：
https://www.cnblogs.com/nancyzhu/p/8119862.html