how to solve following sexmachine anaconda python error? : (base) C:\Users\sujit>pip install SexMachine
Collecting SexMachine
  Using cached https://files.pythonhosted.org/packages/dd/01/cc5b32af2b3658079736bd865019aeb8db04f9c5764eac72185c276
c/SexMachine-0.1.1.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Windows\TEMP\pip-install-wlnebm4x\SexMachine\setup.py", line 14, in <module>
        long_description=open('README.rst').read(),
      File "c:\users\sujit\anaconda3\lib\encodings\cp1252.py", line 23, in decode
        return codecs.charmap_decode(input,self.errors,decoding_table)[0]
    UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 835: character maps to <undefined>

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Windows\TEMP\pip-install-wlnebm4x\SexMachine\



I updated setuptools but it is not solving this problem. 


please help. thanks in advance.