从文本文件到字典

我遇到了一些麻烦。我有一个包含如下内容的 .txt 文件:

    {'x': '1', 'y': 's'}

我想将其导入到字典中。我先前使用了这段代码，但它不起作用:

     import json
     database = {}
     f = open('ds.txt','r')
     def load():
             database=json.load(open("ds.txt"))
             print(database)  
     load()

错误如下:

    Traceback (most recent call last):
    File "C:\Users\tan\Downloads\Compressed\project2\ct.py", line 11, in 
load()
    File "C:\Users\tan\Downloads\Compressed\project2\ct.py", line 6, in load
database=json.load(open("ds.txt"))
    File "C:\Users\tan\AppData\Local\Programs\Python\Python35-32\lib\json\__init__.py", line 268, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
    File "C:\Users\tan\AppData\Local\Programs\Python\Python35-32\lib\json\__init__.py", line 319, in loads
return _default_decoder.decode(s)
   File "C:\Users\tan\AppData\Local\Programs\Python\Python35-32\lib\json\decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
   File "C:\Users\tan\AppData\Local\Programs\Python\Python35-32\lib\json\decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
   json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 2 (char 1)

我也尝试了这个，但我不认为它真的起作用:

    database={}
    f=open("ds.txt","r")
    def load():
            o= f.read()
            database=o
            print(database)
    load()

这段代码属于一个大代码块，所以如果需要整体代码来回答我的问题，请告诉我。

谢谢。