这是我在尝试（venv）$ pip在cmd中安装flask python-dotenv python-chess cairosvg twilio时遇到的错误，我使用的是python 3.8。关于如何解决它的任何想法？
错误：命令错误，退出状态为1：
命令：'c：\ users \ santiago \ venv \ scripts \ python.exe'-c'import sys，setuptools，tokenize; sys.argv [0] ='“'”'C：\ Users \ Santiago \ AppData \ Local \ Temp \ pip-install-jycvbqrt \ cairocffi \ setup.py'“”';; 文件 ='“'”'C：\ Users \ Santiago \ AppData \ Local \ Temp \ pip-install-jycvbqrt \ cairocffi \ setup.py'“”'; f = getattr（tokenize， '“”“'open'”'“，打开）（文件）; code = f.read（）。replace（'”'“'\ r \ n'”'“'， '“'”'\ n'“'”'）; f.close（）; exec（compile（code， file ，'“'”'exec'“'”'）））'egg_info --egg-base pip-egg-info
CWD：C：\ Users \ Santiago \ AppData \ Local \ Temp \ pip-install-jycvbqrt \ cairocffi
完整输出（107行）：
追溯（最近一次通话）：
_find_latest_available_vc_ver中的文件“ c：\ users \ santiago \ venv \ lib \ site-packages \ setuptools \ msvc.py”，行489
返回self.find_available_vc_vers（）[-1]
IndexError：列表索引超出范围
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 154, in save_modules
yield saved
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 195, in setup_context
yield
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 250, in run_setup
_execfile(setup_script, ns)
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 45, in _execfile
exec(code, globals, locals)
File "C:\Users\Santiago\AppData\Local\Temp\easy_install-acoeat_m\cffi-1.14.1\setup.py", line 131, in <module>
File "C:\Users\Santiago\AppData\Local\Temp\easy_install-acoeat_m\cffi-1.14.1\setup.py", line 109, in uses_msvc
File "C:\Python3\lib\distutils\command\config.py", line 225, in try_compile
self._compile(body, headers, include_dirs, lang)
File "C:\Python3\lib\distutils\command\config.py", line 132, in _compile
self.compiler.compile([src], include_dirs=include_dirs)
File "C:\Python3\lib\distutils\_msvccompiler.py", line 360, in compile
self.initialize()
File "C:\Python3\lib\distutils\_msvccompiler.py", line 253, in initialize
vc_env = _get_vc_env(plat_spec)
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 185, in msvc14_get_vc_env
return EnvironmentInfo(plat_spec, vc_min_ver=14.0).return_env()
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 843, in __init__
self.si = SystemInfo(self.ri, vc_ver)
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 485, in __init__
self.vc_ver = vc_ver or self._find_latest_available_vc_ver()
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 492, in _find_latest_available_vc_ver
raise distutils.errors.DistutilsPlatformError(err)
distutils.errors.DistutilsPlatformError: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Users\Santiago\AppData\Local\Temp\pip-install-jycvbqrt\cairocffi\setup.py", line 10, in <module>
setup(
File "c:\users\santiago\venv\lib\site-packages\setuptools\__init__.py", line 144, in setup
_install_setup_requires(attrs)
File "c:\users\santiago\venv\lib\site-packages\setuptools\__init__.py", line 139, in _install_setup_requires
dist.fetch_build_eggs(dist.setup_requires)
File "c:\users\santiago\venv\lib\site-packages\setuptools\dist.py", line 716, in fetch_build_eggs
resolved_dists = pkg_resources.working_set.resolve(
File "c:\users\santiago\venv\lib\site-packages\pkg_resources\__init__.py", line 780, in resolve
dist = best[req.key] = env.best_match(
File "c:\users\santiago\venv\lib\site-packages\pkg_resources\__init__.py", line 1065, in best_match
return self.obtain(req, installer)
File "c:\users\santiago\venv\lib\site-packages\pkg_resources\__init__.py", line 1077, in obtain
return installer(requirement)
File "c:\users\santiago\venv\lib\site-packages\setuptools\dist.py", line 786, in fetch_build_egg
return cmd.easy_install(req)
File "c:\users\santiago\venv\lib\site-packages\setuptools\command\easy_install.py", line 679, in easy_install
return self.install_item(spec, dist.location, tmpdir, deps)
File "c:\users\santiago\venv\lib\site-packages\setuptools\command\easy_install.py", line 705, in install_item
dists = self.install_eggs(spec, download, tmpdir)
File "c:\users\santiago\venv\lib\site-packages\setuptools\command\easy_install.py", line 890, in install_eggs
return self.build_and_install(setup_script, setup_base)
File "c:\users\santiago\venv\lib\site-packages\setuptools\command\easy_install.py", line 1158, in build_and_install
self.run_setup(setup_script, setup_base, args)
File "c:\users\santiago\venv\lib\site-packages\setuptools\command\easy_install.py", line 1144, in run_setup
run_setup(setup_script, args)
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 253, in run_setup
raise
File "C:\Python3\lib\contextlib.py", line 131, in __exit__
self.gen.throw(type, value, traceback)
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 195, in setup_context
yield
File "C:\Python3\lib\contextlib.py", line 131, in __exit__
self.gen.throw(type, value, traceback)
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 166, in save_modules
saved_exc.resume()
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 141, in resume
six.reraise(type, exc, self._tb)
File "c:\users\santiago\venv\lib\site-packages\setuptools\_vendor\six.py", line 685, in reraise
raise value.with_traceback(tb)
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 154, in save_modules
yield saved
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 195, in setup_context
yield
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 250, in run_setup
_execfile(setup_script, ns)
File "c:\users\santiago\venv\lib\site-packages\setuptools\sandbox.py", line 45, in _execfile
exec(code, globals, locals)
File "C:\Users\Santiago\AppData\Local\Temp\easy_install-acoeat_m\cffi-1.14.1\setup.py", line 131, in <module>
File "C:\Users\Santiago\AppData\Local\Temp\easy_install-acoeat_m\cffi-1.14.1\setup.py", line 109, in uses_msvc
File "C:\Python3\lib\distutils\command\config.py", line 225, in try_compile
self._compile(body, headers, include_dirs, lang)
File "C:\Python3\lib\distutils\command\config.py", line 132, in _compile
self.compiler.compile([src], include_dirs=include_dirs)
File "C:\Python3\lib\distutils\_msvccompiler.py", line 360, in compile
self.initialize()
File "C:\Python3\lib\distutils\_msvccompiler.py", line 253, in initialize
vc_env = _get_vc_env(plat_spec)
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 185, in msvc14_get_vc_env
return EnvironmentInfo(plat_spec, vc_min_ver=14.0).return_env()
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 843, in __init__
self.si = SystemInfo(self.ri, vc_ver)
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 485, in __init__
self.vc_ver = vc_ver or self._find_latest_available_vc_ver()
File "c:\users\santiago\venv\lib\site-packages\setuptools\msvc.py", line 492, in _find_latest_available_vc_ver
raise distutils.errors.DistutilsPlatformError(err)
distutils.errors.DistutilsPlatformError: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/
----------------------------------------
错误：命令错误，退出状态为1：python setup.py egg_info检查日志以获取完整的命令输出。