Error installing xxtea on py 3.6+

[Lafko]

Installing collected packages: xxtea
Running setup.py install for xxtea ... error
Exception:
Traceback (most recent call last):
File "c:\python37\lib\site-packages\pip\compat_init_.py", line 73, in console_to_str
return s.decode(sys.stdout.encoding)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xad in position 31: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "c:\python37\lib\site-packages\pip\basecommand.py", line 215, in main
status = self.run(options, args)
File "c:\python37\lib\site-packages\pip\commands\install.py", line 342, in run
prefix=options.prefix_path,
File "c:\python37\lib\site-packages\pip\req\req_set.py", line 784, in install
**kwargs
File "c:\python37\lib\site-packages\pip\req\req_install.py", line 878, in install
spinner=spinner,
File "c:\python37\lib\site-packages\pip\utils_init_.py", line 676, in call_subprocess
line = console_to_str(proc.stdout.readline())
File "c:\python37\lib\site-packages\pip\compat_init_.py", line 75, in console_to_str
return s.decode('utf_8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xad in position 31: invalid start byte

How to install?

[ifduyue]

@Lafko I tried installing xxtea on Linux with Python 3.7.0b1, couldn't reproduce.
Will try again on a windows machine.

[Lafko]

I found the solution to the problem, need to put pip 10+