我正在尝试使用以下命令在ubuntu 19.04上安装pytorch：
pip3 install torch
但显示以下错误：
Exception:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 143, in main
status = self.run(options, args)
File "/usr/lib/python3/dist-packages/pip/_internal/commands/install.py", line 338, in run
resolver.resolve(requirement_set)
File "/usr/lib/python3/dist-packages/pip/_internal/resolve.py", line 102, in resolve
self._resolve_one(requirement_set, req)
File "/usr/lib/python3/dist-packages/pip/_internal/resolve.py", line 256, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "/usr/lib/python3/dist-packages/pip/_internal/resolve.py", line 209, in _get_abstract_dist_for
self.require_hashes
File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 283, in prepare_linked_requirement
progress_bar=self.progress_bar
File "/usr/lib/python3/dist-packages/pip/_internal/download.py", line 836, in unpack_url
progress_bar=progress_bar
File "/usr/lib/python3/dist-packages/pip/_internal/download.py", line 673, in unpack_http_url
progress_bar)
File "/usr/lib/python3/dist-packages/pip/_internal/download.py", line 868, in _download_http_url
stream=True,
File "/usr/share/python-wheels/requests-2.21.0-py2.py3-none-any.whl/requests/sessions.py", line 546, in get
return self.request('GET', url, **kwargs)
File "/usr/lib/python3/dist-packages/pip/_internal/download.py", line 396, in request
return super(PipSession, self).request(method, url, *args, **kwargs)
File "/usr/share/python-wheels/requests-2.21.0-py2.py3-none-any.whl/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/usr/share/python-wheels/requests-2.21.0-py2.py3-none-any.whl/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/adapter.py", line 37, in send
cached_response = self.controller.cached_request(request)
File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/controller.py", line 111, in cached_request
resp = self.serializer.loads(request, cache_data)
File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/serialize.py", line 114, in loads
return getattr(self, "_loads_v{0}".format(ver))(request, data)
File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/serialize.py", line 176, in _loads_v2
cached = json.loads(zlib.decompress(data).decode("utf8"))
zlib.error: Error -5 while decompressing data: incomplete or truncated stream
我想知道问题是来自pip3还是来自python。
我的python3版本是3.7.3
我们非常感谢您的帮助。