我想在虛擬環(huán)境中安裝 bs4，但是發(fā)生了錯誤，我不知道為什么。我已經更新了 bs4、pip 和 pipenv。這是錯誤：C:\Users\ACER\Desktop\PYTEST\temp>pipenv install beautifulsoup4Installing beautifulsoup4…Adding beautifulsoup4 to Pipfile's [packages]…Installation SucceededInstalling dependencies from Pipfile.lock (06c5f2)…An error occurred while installing beautifulsoup==3.2.2 --hash=sha256:a04169602bff6e3138b1259dbbf491f5a27f9499dea9a8fbafd48843f9d89970 --hash=sha256:d31413d71f6ca027ff6b06c891b62ee8ff48267ccd969f881d810e5d1fe49565! Will try again.  ================================ 9/9 - 00:00:05Installing initially failed dependencies…[pipenv.exceptions.InstallError]:   File "c:\users\acer\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 1992, in do_install[pipenv.exceptions.InstallError]:       skip_lock=skip_lock,[pipenv.exceptions.InstallError]:   File "c:\users\acer\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 1253, in do_init[pipenv.exceptions.InstallError]:       pypi_mirror=pypi_mirror,[pipenv.exceptions.InstallError]:   File "c:\users\acer\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 859, in do_install_dependencies[pipenv.exceptions.InstallError]:       retry_list, procs, failed_deps_queue, requirements_dir, **install_kwargs[pipenv.exceptions.InstallError]:   File "c:\users\acer\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 763, in batch_install[pipenv.exceptions.InstallError]:       _cleanup_procs(procs, not blocking, failed_deps_queue, retry=retry)[pipenv.exceptions.InstallError]:   File "c:\users\acer\appdata\local\programs\python\python37\lib\site-packages\pipenv\core.py", line 681, in _cleanup_procs[pipenv.exceptions.InstallError]:       raise exceptions.InstallError(c.dep.name, extra=err_lines)