解决pip报错：Fatal error in launcher: Unable to create process using \python.exe

使用pip命令出现错误：

 pip install jupyter                                            
Fatal error in launcher: Unable to create process using '"D:\Python\Python38-64.0\python.exe"  "A:\Python\Python38-64.0\Scripts\pip.exe" install jupyter': ???????????

在检查环境变量后未果。在终端输入该命令成功：

python -m pip install –upgrade –force-reinstall pip
 

作者：不晚.