python ：pyinstaller安装失败

在管理员权限下也安装失败，求有遇到过童鞋给个招

C:\Users\11595>pip install pyinstaller
Traceback (most recent call last):
File "d:\software\install2018\python\lib\runpy.py", line 184, in _run_module_as_main
"main", mod_spec)
File "d:\software\install2018\python\lib\runpy.py", line 85, in run_code
exec(code, run_globals)
File "D:\software\install2018\python\Scripts\pip.exe_main.py", line 5, in
File "d:\software\install2018\python\lib\site-packages\pip_internal\cli\main.py", line 58
sys.stderr.write(f"ERROR: {exc}")
^
SyntaxError: invalid syntax

先安装pywin32

建议用个干净的虚拟环境试试，这样是可以安装成功才对