我是下的3.5版本，然后按照慕课里面pip install pyinstaller 的方安装，报错。有大佬解释一下吗，还有两个星期就考二级了。

C:\Users\容垣>pip install pyinstaller
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.
Collecting pyinstaller
Downloading pyinstaller-4.2.tar.gz (3.6 MB)
|████████████████████████████████| 3.6 MB 23 kB/s
Installing build dependencies ... done
Getting requirements to build wheel ... done
ERROR: Exception:
Traceback (most recent call last):
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 171, in _merge_into_criterion
crit = self.state.criteria[name]
KeyError: 'pyinstaller'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "d:\python\py\lib\site-packages\pip\_internal\cli\base_command.py", line 223, in _main
status = self.run(options, args)
File "d:\python\py\lib\site-packages\pip\_internal\cli\req_command.py", line 180, in wrapper
return func(self, options, args)
File "d:\python\py\lib\site-packages\pip\_internal\commands\install.py", line 321, in run
reqs, check_supported_wheels=not options.target_dir
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 122, in resolve
requirements, max_rounds=try_to_avoid_resolution_too_deep,
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 453, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 318, in resolve
name, crit = self._merge_into_criterion(r, parent=None)
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 173, in _merge_into_criterion
crit = Criterion.from_requirement(self._p, requirement, parent)
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 82, in from_requirement
if not cands:
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\structs.py", line 124, in __bool__
return bool(self._sequence)
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 99, in __bool__
return any(self)
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 244, in iter_index_candidates
version=ican.version,
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 169, in _make_candidate_from_link
name=name, version=version,
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 302, in __init__
version=version,
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 144, in __init__
self.dist = self._prepare()
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 222, in _prepare
dist = self._prepare_distribution()
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 308, in _prepare_distribution
self._ireq, parallel_builds=True,
File "d:\python\py\lib\site-packages\pip\_internal\operations\prepare.py", line 480, in prepare_linked_requirement
return self._prepare_linked_requirement(req, parallel_builds)
File "d:\python\py\lib\site-packages\pip\_internal\operations\prepare.py", line 524, in _prepare_linked_requirement
req, self.req_tracker, self.finder, self.build_isolation,
File "d:\python\py\lib\site-packages\pip\_internal\operations\prepare.py", line 88, in _get_prepared_distribution
abstract_dist.prepare_distribution_metadata(finder, build_isolation)
File "d:\python\py\lib\site-packages\pip\_internal\distributions\sdist.py", line 39, in prepare_distribution_metadata
self._setup_isolation(finder)
File "d:\python\py\lib\site-packages\pip\_internal\distributions\sdist.py", line 97, in _setup_isolation
reqs = backend.get_requires_for_build_wheel()
File "d:\python\py\lib\site-packages\pip\_vendor\pep517\wrappers.py", line 178, in get_requires_for_build_wheel
'config_settings': config_settings
File "d:\python\py\lib\site-packages\pip\_vendor\pep517\wrappers.py", line 284, in _call_hook
raise BackendUnavailable(data.get('traceback', ''))
pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last):
File "d:\python\py\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 86, in _build_backend
obj = import_module(mod_path)
File "d:\python\py\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked
ImportError: No module named 'setuptools.build_meta'

C:\Users\容垣>python -m pip install --upgrade pip=20.2.4
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.
ERROR: Invalid requirement: 'pip=20.2.4'
Hint: = is not a valid operator. Did you mean == ?

C:\Users\容垣>python -m pip install --upgrade pip=20.2.4
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.
ERROR: Invalid requirement: 'pip=20.2.4'
Hint: = is not a valid operator. Did you mean == ?

C:\Users\容垣>pip freeze > requirments.txt
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.

C:\Users\容垣>python -m pip install --upgrade pip=20.2.4
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.
ERROR: Invalid requirement: 'pip=20.2.4'
Hint: = is not a valid operator. Did you mean == ?

C:\Users\容垣>pip freeze > requirments.txt
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.

C:\Users\容垣>--use-deprecated=legacy-resolverflag
'--use-deprecated' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

C:\Users\容垣>pip install pyinstaller
DEPRECATION: Python 3.5 reached the end of its life on September 13th, 2020. Please upgrade your Python as Python 3.5 is no longer maintained. pip 21.0 will drop support for Python 3.5 in January 2021. pip 21.0 will remove support for this functionality.
Collecting pyinstaller
Using cached pyinstaller-4.2.tar.gz (3.6 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
ERROR: Exception:
Traceback (most recent call last):
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 171, in _merge_into_criterion
crit = self.state.criteria[name]
KeyError: 'pyinstaller'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "d:\python\py\lib\site-packages\pip\_internal\cli\base_command.py", line 223, in _main
status = self.run(options, args)
File "d:\python\py\lib\site-packages\pip\_internal\cli\req_command.py", line 180, in wrapper
return func(self, options, args)
File "d:\python\py\lib\site-packages\pip\_internal\commands\install.py", line 321, in run
reqs, check_supported_wheels=not options.target_dir
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 122, in resolve
requirements, max_rounds=try_to_avoid_resolution_too_deep,
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 453, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 318, in resolve
name, crit = self._merge_into_criterion(r, parent=None)
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 173, in _merge_into_criterion
crit = Criterion.from_requirement(self._p, requirement, parent)
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 82, in from_requirement
if not cands:
File "d:\python\py\lib\site-packages\pip\_vendor\resolvelib\structs.py", line 124, in __bool__
return bool(self._sequence)
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 99, in __bool__
return any(self)
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 244, in iter_index_candidates
version=ican.version,
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 169, in _make_candidate_from_link
name=name, version=version,
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 302, in __init__
version=version,
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 144, in __init__
self.dist = self._prepare()
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 222, in _prepare
dist = self._prepare_distribution()
File "d:\python\py\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 308, in _prepare_distribution
self._ireq, parallel_builds=True,
File "d:\python\py\lib\site-packages\pip\_internal\operations\prepare.py", line 480, in prepare_linked_requirement
return self._prepare_linked_requirement(req, parallel_builds)
File "d:\python\py\lib\site-packages\pip\_internal\operations\prepare.py", line 524, in _prepare_linked_requirement
req, self.req_tracker, self.finder, self.build_isolation,
File "d:\python\py\lib\site-packages\pip\_internal\operations\prepare.py", line 88, in _get_prepared_distribution
abstract_dist.prepare_distribution_metadata(finder, build_isolation)
File "d:\python\py\lib\site-packages\pip\_internal\distributions\sdist.py", line 39, in prepare_distribution_metadata
self._setup_isolation(finder)
File "d:\python\py\lib\site-packages\pip\_internal\distributions\sdist.py", line 97, in _setup_isolation
reqs = backend.get_requires_for_build_wheel()
File "d:\python\py\lib\site-packages\pip\_vendor\pep517\wrappers.py", line 178, in get_requires_for_build_wheel
'config_settings': config_settings
File "d:\python\py\lib\site-packages\pip\_vendor\pep517\wrappers.py", line 284, in _call_hook
raise BackendUnavailable(data.get('traceback', ''))
pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last):
File "d:\python\py\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 86, in _build_backend
obj = import_module(mod_path)
File "d:\python\py\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked
ImportError: No module named 'setuptools.build_meta'

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