大数据计算MaxCompute pip安装命令是什么原因？

大数据计算MaxCompute pip安装命令pip install -U imbalanced-learn报错：DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
WARNING: The directory '/root/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Defaulting to user installation because normal site-packages is not writeable
Collecting imbalanced-learn
Downloading imbalanced-learn-0.12.0.tar.gz (29.7 MB)
ERROR: Exception:
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/pip/_internal/cli/base_command.py", line 223, in _main
status = self.run(options, args)
File "/usr/lib/python2.7/site-packages/pip/_internal/cli/req_command.py", line 180, in wrapper
return func(self, options, args)
File "/usr/lib/python2.7/site-packages/pip/_internal/commands/install.py", line 321, in run
reqs, check_supported_wheels=not options.target_dir
File "/usr/lib/python2.7/site-packages/pip/_internal/resolution/legacy/resolver.py", line 180, in resolve
discovered_reqs.extend(self._resolve_one(requirement_set, req))
File "/usr/lib/python2.7/site-packages/pip/_internal/resolution/legacy/resolver.py", line 385, in _resolve_one
dist = self._get_dist_for(req_to_install)
File "/usr/lib/python2.7/site-packages/pip/_internal/resolution/legacy/resolver.py", line 337, in _get_dist_for
dist = self.preparer.prepare_linked_requirement(req)
File "/usr/lib/python2.7/site-packages/pip/_internal/operations/prepare.py", line 480, in prepare_linked_requirement
return self._prepare_linked_requirement(req, parallel_builds)
File "/usr/lib/python2.7/site-packages/pip/_internal/operations/prepare.py", line 505, in _prepare_linked_requirement
self.download_dir, hashes,
File "/usr/lib/python2.7/site-packages/pip/_internal/operations/prepare.py", line 257, in unpack_url
hashes=hashes,
File "/usr/lib/python2.7/site-packages/pip/_internal/operations/prepare.py", line 130, in get_http_url
from_path, content_type = download(link, temp_dir.path)
File "/usr/lib/python2.7/site-packages/pip/_internal/network/download.py", line 163, in call
for chunk in chunks:
File "/usr/lib/python2.7/site-packages/pip/_internal/cli/progress_bars.py", line 168, in iter
for x in it:
File "/usr/lib/python2.7/site-packages/pip/_internal/network/utils.py", line 88, in response_chunks
decode_content=False,
File "/usr/lib/python2.7/site-packages/pip/_vendor/urllib3/response.py", line 576, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "/usr/lib/python2.7/site-packages/pip/_vendor/urllib3/response.py", line 541, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "/usr/lib64/python2.7/contextlib.py", line 35, in exit
self.gen.throw(type, value, traceback)
File "/usr/lib/python2.7/site-packages/pip/_vendor/urllib3/response.py", line 451, in _error_catcher
raise ReadTimeoutError(self._pool, None, "Read timed out.")
ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out. 是什么原因？