我尝试通过 pip3 在系统上安装 uvicorn ，但我无法从命令行运行它。有关如何解决此问题的任何指示？
Requirement already satisfied: uvicorn in /home/vhawk19/.local/lib/python3.7/site-packages (0.10.8)
Requirement already satisfied: uvloop>=0.14.0; sys_platform != "win32" and sys_platform != "cygwin" and platform_py
thon_implementation != "pypy" in /home/vhawk19/.local/lib/python3.7/site-packages (from uvicorn) (0.14.0)
Requirement already satisfied: websockets==8.* in /home/vhawk19/.local/lib/python3.7/site-packages (from uvicorn)
(8.1)
Requirement already satisfied: click==7.* in /home/vhawk19/.local/lib/python3.7/site-packages (from uvicorn) (7.0
)
Requirement already satisfied: h11==0.8.* in /home/vhawk19/.local/lib/python3.7/site-packages (from uvicorn) (0.8
.1)
Requirement already satisfied: httptools==0.0.13; sys_platform != "win32" and sys_platform != "cygwin" and platform
_python_implementation != "pypy" in /home/vhawk19/.local/lib/python3.7/site-packages …