windows
要安装pytorch和torchvision
遇到的问题（如有报错代码请全部录入）
在jupyter-lab里试运行的时候import pytorch正常但是import torchvision总是报错
尝试过的解决方法
在网上查过很多解决办法没什么效果，官网上conda和pip下载均尝试过好几遍，在anacoda prompt中下载正常但jupyter-lab里报错
pip卸掉PIL重装一下看看
PIL重装指的是？刚刚在cmd中卸载了torch
你的报错应该是出在import PILLOW_VERSION from PIL
所以试试先pip uninstall PIL卸载PIL，然后pip install PIL再安装一下
用这个关键词在bing上搜
安装torchvision报错 can not import PILLOW_VERSION from PIL
报错结果请按顺序放出从头到尾所有内容，能用文本就别用图片
这样方便他人帮忙看问题原因
比如
(torch) C:\Users\123456>pip uninstall PIL
WARNING: Skipping PIL as it is not installed.
(torch) C:\Users\123456>pip install PIL
ERROR: Could not find a version that satisfies the requirement PIL (from versions: none)
ERROR: No matching distribution found for PIL
换个虚拟环境重新装一遍jupyter和pytorch吧吧，这样最方便了
这里意思是你想卸载PIL，但之前根本没装
想安装PIL，但机器不知道要装哪个版本
好的，我重来一遍吧
切换到新的虚拟环境后
直接输这一行，全装上
pip install jupyterlab torch torchvision torchaudio
意思是pip安装jupyterlab torch torchvision torchaudio
报错了，是网速太慢吗？可以用清华镜像吗？
ERROR: Exception:
Traceback (most recent call last):
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\urllib3\response.py", line 437, in _error_catcher
yield
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\urllib3\response.py", line 560, in read
data = self._fp_read(amt) if not fp_closed else b""
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\urllib3\response.py", line 526, in _fp_read
return self._fp.read(amt) if amt is not None else self._fp.read()
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 90, in read
data = self.__fp.read(amt)
File "C:\anocoda\envs\torch1\lib\http\client.py", line 465, in read
n = self.readinto(b)
File "C:\anocoda\envs\torch1\lib\http\client.py", line 509, in readinto
n = self.fp.readinto(b)
File "C:\anocoda\envs\torch1\lib\socket.py", line 589, in readinto
return self._sock.recv_into(b)
File "C:\anocoda\envs\torch1\lib\ssl.py", line 1071, in recv_into
return self.read(nbytes, buffer)
File "C:\anocoda\envs\torch1\lib\ssl.py", line 929, in read
return self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\cli\base_command.py", line 160, in exc_logging_wrapper
status = run_func(*args)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\cli\req_command.py", line 247, in wrapper
return func(self, options, args)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\commands\install.py", line 401, in run
reqs, check_supported_wheels=not options.target_dir
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 93, in resolve
collected.requirements, max_rounds=try_to_avoid_resolution_too_deep
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 481, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 348, in resolve
self._add_to_criteria(self.state.criteria, r, parent=None)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 172, in _add_to_criteria
if not criterion.candidates:
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\resolvelib\structs.py", line 151, in __bool__
return bool(self._sequence)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 155, in __bool__
return any(self)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 143, in <genexpr>
return (c for c in iterator if id(c) not in self._incompatible_ids)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 47, in _iter_built
candidate = func()
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 211, in _make_candidate_from_link
version=version,
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 303, in __init__
version=version,
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 162, in __init__
self.dist = self._prepare()
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 231, in _prepare
dist = self._prepare_distribution()
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 308, in _prepare_distribution
return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\operations\prepare.py", line 491, in prepare_linked_requirement
return self._prepare_linked_requirement(req, parallel_builds)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\operations\prepare.py", line 542, in _prepare_linked_requirement
hashes,
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\operations\prepare.py", line 170, in unpack_url
hashes=hashes,
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\operations\prepare.py", line 107, in get_http_url
from_path, content_type = download(link, temp_dir.path)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\network\download.py", line 147, in __call__
for chunk in chunks:
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\cli\progress_bars.py", line 53, in _rich_progress_bar
for chunk in iterable:
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_internal\network\utils.py", line 87, in response_chunks
decode_content=False,
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\urllib3\response.py", line 621, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\urllib3\response.py", line 586, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "C:\anocoda\envs\torch1\lib\contextlib.py", line 130, in __exit__
self.gen.throw(type, value, traceback)
File "C:\anocoda\envs\torch1\lib\site-packages\pip\_vendor\urllib3\response.py", line 442, in _error_catcher
raise ReadTimeoutError(self._pool, None, "Read timed out.")
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
443报错，换清华源吧
我创建的新虚拟环境是torch1,在anacoda prompt上好像安装成功了，但是在jupyter-lab上报错了。
(base) C:\Users\123456>activate torch1
(torch1) C:\Users\123456>pip install -i https://pypi.tuna.tsinghua.edu.cn/simple torch torchvision torchaudio
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Requirement already satisfied: torch in c:\anocoda\envs\torch1\lib\site-packages (1.13.1)
Collecting torchvision
Using cached https://pypi.tuna.tsinghua.edu.cn/packages/77/ec/ccdfcafb958f6007cc357ce12fd945551a71503b88cd3f78e49fd958f949/torchvision-0.14.1-cp37-cp37m-win_amd64.whl (1.1 MB)
Collecting torchaudio
Using cached https://pypi.tuna.tsinghua.edu.cn/packages/01/66/0b5689b4a26255b23bf899d9ae016b04d9ea244e944b8010a71fe5f500ff/torchaudio-0.13.1-cp37-cp37m-win_amd64.whl (2.0 MB)
Requirement already satisfied: typing-extensions in c:\anocoda\envs\torch1\lib\site-packages (from torch) (4.7.1)
Collecting requests
Using cached https://pypi.tuna.tsinghua.edu.cn/packages/70/8e/0e2d847013cb52cd35b38c009bb167a1a26b2ce6cd6965bf26b47bc0bf44/requests-2.31.0-py3-none-any.whl (62 kB)
Requirement already satisfied: pillow!=8.3.*,>=5.3.0 in c:\anocoda\envs\torch1\lib\site-packages (from torchvision) (9.5.0)
Requirement already satisfied: numpy in c:\anocoda\envs\torch1\lib\site-packages (from torchvision) (1.21.6)
Requirement already satisfied: charset-normalizer<4,>=2 in c:\anocoda\envs\torch1\lib\site-packages (from requests->torchvision) (3.2.0)
Requirement already satisfied: idna<4,>=2.5 in c:\anocoda\envs\torch1\lib\site-packages (from requests->torchvision) (3.4)
Requirement already satisfied: certifi>=2017.4.17 in c:\anocoda\envs\torch1\lib\site-packages (from requests->torchvision) (2022.12.7)
Requirement already satisfied: urllib3<3,>=1.21.1 in c:\anocoda\envs\torch1\lib\site-packages (from requests->torchvision) (2.0.4)
Installing collected packages: requests, torchvision, torchaudio
Successfully installed requests-2.31.0 torchaudio-0.13.1 torchvision-0.14.1
jupyter-lab上报错显示modlenotfound
这个在jupyter里!pip的方法是我自己和其他同学验证过两次没问题的，至少这样装上能用
- 在全新的虚拟环境里
pip安装jupyter - 在jupyter里用
!pip安装torch
如果想了解更多为什么会发生你这样的问题以及如何解决，你可以参考这个问题的关键词搜一下
https://blog.csdn.net/denglavender/article/details/111707097
