python中将 \\uxxxx转换为 Unicode字符串

Traceback (most recent call last):
  File "<pyshell#15>", line 1, in <module>
    re.sub(r"(\)\u", r'', t)
  File "D:\Python36\lib\re.py", line 191, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "D:\Python36\lib\re.py", line 301, in _compile
    p = sre_compile.compile(pattern, flags)
  File "D:\Python36\lib\sre_compile.py", line 562, in compile
    p = sre_parse.parse(p, flags)
  File "D:\Python36\lib\sre_parse.py", line 855, in parse
    p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
  File "D:\Python36\lib\sre_parse.py", line 416, in _parse_sub
    not nested and not items))
  File "D:\Python36\lib\sre_parse.py", line 765, in _parse
    p = _parse_sub(source, state, sub_verbose, nested + 1)
  File "D:\Python36\lib\sre_parse.py", line 416, in _parse_sub
    not nested and not items))
  File "D:\Python36\lib\sre_parse.py", line 502, in _parse
    code = _escape(source, this, state)
  File "D:\Python36\lib\sre_parse.py", line 362, in _escape
    raise source.error("incomplete escape %s" % escape, len(escape))
sre_constants.error: incomplete escape \u at position 3

import json
s = '\\u9500\\u552e'
print(json.loads(f'"{s}"'))