I failed when i installed Pyaudio on python

Question

ERROR: Command errored out with exit status 1:
     command: 'c:\users\dell\appdata\local\programs\python\python39\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\DELL\\AppData\\Local\\Temp\\pip-install-rxelrboi\\pyaudio_327d34adac3f4a0fa394c4ccb1a7d6a4\\setup.py'"'"'; __file__='"'"'C:\\Users\\DELL\\AppData\\Local\\Temp\\pip-install-rxelrboi\\pyaudio_327d34adac3f4a0fa394c4ccb1a7d6a4\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\DELL\AppData\Local\Temp\pip-record-cuy6fjts\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\dell\appdata\local\programs\python\python39\Include\pyaudio'
         cwd: C:\Users\DELL\AppData\Local\Temp\pip-install-rxelrboi\pyaudio_327d34adac3f4a0fa394c4ccb1a7d6a4\
    Complete output (9 lines):
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.9
    copying src\pyaudio.py -> build\lib.win-amd64-3.9
    running build_ext
    building '_portaudio' extension
    error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microso    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\dell\appdata\local\programs\python\python39\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\DELL\\AppData\\Local\\Temp\\pip-install-rxelrboi\\pyaudio_327d34adac3f4a0fa394c4ccb1a7d6a4\\setup.py'"'"'; __file__='"'"'C:\\Users\\DELL\\AppData\\Local\\Temp\\pip-install-rxelrboi\\pyaudio_327d34adac3f4a0fa394c4ccb1a7d6a4\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\DELL\AppData\Local\Temp\pip-record-cuy6fjts\install-record.txt' 
--single-version-externally-managed --compile --install-headers 'c:\users\dell\appdata\local\programs\python\python39\Include\pyauPS  
C:\Users\DELL\Documents\code\AI> $ which pg_config
$ : The term '$' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of     
the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ $ which pg_config
+ ~
    + CategoryInfo          : ObjectNotFound: ($:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException