pyinstaller报错SyntaxError: 'yield' inside async function 以及pyinstaller安装不了问题

最好的办法，从新装一遍高版本python环境，解决所有问题

> python -V
Python 3.9.0
> pip -V
pip 20.2.3 from d:\python\python310\lib\site-packages\pip (python 3.9)
> pyinstaller -v
4.7

pyinstaller  安装如果直接安装报错，可以安装一个低版本试试

PS D:\python\Anaconda3\Scripts> pip install  pyinstaller==3.2.1
Collecting pyinstaller==3.2.1
  Downloading https://files.pythonhosted.org/packages/3f/d2/3515242cc5cfed12706506d17728a7ee0b8cf33840e250357fd793a94607/PyInstaller-3.2.1.tar.bz2 (2.4MB)
     |████████████████████████████████| 2.4MB 31kB/s
Requirement already satisfied: setuptools in d:\python\anaconda3\lib\site-packages (from pyinstaller==3.2.1) (50.3.2)
Collecting future (from pyinstaller==3.2.1)
  Downloading https://files.pythonhosted.org/packages/45/0b/38b06fd9b92dc2b68d58b75f900e97884c45bedd2ff83203d933cf5851c9/future-0.18.2.tar.gz (829kB)
     |████████████████████████████████| 829kB 22kB/s
Building wheels for collected packages: pyinstaller, future
  Building wheel for pyinstaller (setup.py) ... done
  Stored in directory: C:\Users\lenovo\AppData\Local\pip\Cache\wheels\de\6f\41\ba18c0eaf3b6862d78c6bd50ca2679395c136fb9e087d21cf9
  Building wheel for future (setup.py) ... done
  Stored in directory: C:\Users\lenovo\AppData\Local\pip\Cache\wheels\8b\99\a0\81daf51dcd359a9377b110a8a886b3895921802d2fc1b2397e
Successfully built pyinstaller future
Installing collected packages: future, pyinstaller
Successfully installed future-0.18.2 pyinstaller-3.2.1
PS D:\python\Anaconda3\Scripts> pyinstaller
usage: pyinstaller [-h] [-v] [-D] [-F] [--specpath DIR] [-n NAME]
                   [--add-data <SRC;DEST or SRC:DEST>]
                   [--add-binary <SRC;DEST or SRC:DEST>] [-p DIR]
                   [--hidden-import MODULENAME]
                   [--additional-hooks-dir HOOKSPATH]
                   [--runtime-hook RUNTIME_HOOKS] [--exclude-module EXCLUDES]
                   [--key KEY] [-d] [-s] [--noupx] [-c] [-w]
                   [-i <FILE.ico or FILE.exe,ID or FILE.icns>]
                   [--version-file FILE] [-m <FILE or XML>] [-r RESOURCE]
                   [--uac-admin] [--uac-uiaccess] [--win-private-assemblies]
                   [--win-no-prefer-redirects]
                   [--osx-bundle-identifier BUNDLE_IDENTIFIER]
                   [--distpath DIR] [--workpath WORKPATH] [-y]
                   [--upx-dir UPX_DIR] [-a] [--clean] [--log-level LEVEL]
                   [--upx UPX]
                   scriptname [scriptname ...]
pyinstaller: error: the following arguments are required: scriptname

SyntaxError: 'yield' inside async function

pip install git+https://github.com/pyinstaller/pyinstaller.git

PS D:\haojingkeji\flask-vue-crud\server> pip install git+https://github.com/pyinstaller/pyinstaller.git
Collecting git+https://github.com/pyinstaller/pyinstaller.git
  Cloning https://github.com/pyinstaller/pyinstaller.git to c:\users\lenovo\appdata\local\temp\pip-req-build-ql6y77de
  Running command git clone -q https://github.com/pyinstaller/pyinstaller.git 'C:\Users\lenovo\AppData\Local\Temp\pip-req-build-ql6y77de'