今天使用torchvision进行学习
导入torchvision的时候报错了
代码语言：javascript复制C:UsersAdministrator>python
Python 3.7.6 (tags/v3.7.6:43364a7ae0, Dec 19 2019, 00:42:30) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import torchvision.datasets
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "D:pythonlibsite-packagestorchvision__init__.py", line 1, in <module>
from torchvision import models
File "D:pythonlibsite-packagestorchvisionmodels__init__.py", line 11, in <module>
from . import detection
File "D:pythonlibsite-packagestorchvisionmodelsdetection__init__.py", line 1, in <module>
from .faster_rcnn import *
File "D:pythonlibsite-packagestorchvisionmodelsdetectionfaster_rcnn.py", line 7, in <module>
from torchvision.ops import misc as misc_nn_ops
File "D:pythonlibsite-packagestorchvisionops__init__.py", line 1, in <module>
from .boxes import nms, box_iou
File "D:pythonlibsite-packagestorchvisionopsboxes.py", line 2, in <module>
from torchvision import _C
ImportError: DLL load failed: 找不到指定的模块。很明显是torchvision的问题，于是开启了面向百度debug方法
首先说一下百度的解决方案：
- 老生常谈，使用conda安装torch和torchvision，说pip安装的时候可能会有什么编译错误或者链接错误。Tom可信指数：3颗星，pip好歹也是一个很牛的工具，而且我费了九牛二虎之力 才用pip安装成功的torchvision，我才不去卸载然后再安装呢。
2.安装一个dll的第三方库，叫做intel-openmp，看到这名字我上去就是一个大写的“漏”，因为根绝我的第三感，不用安装，而且这个方法的提供者说也失败了，所以Tom可信指数：3颗星
这时候，Tom开始着急了，额头紧缩，因为若是把torch和torchvision全卸载了，然后再安装又得耽误好久，网络问题是个大问题。
不管了先看一下 torchvision的版本吧
代码语言：javascript复制C:UsersAdministrator>pip list
Package Version
--------------------------------- -------------------
-ip 20.1
a2x 0.0.3
absl-py 1.0.0
aioredis 1.3.1
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astunparse 1.6.3
async-timeout 3.0.1
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attrs 19.3.0
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certifi 2019.11.28
cffi 1.14.0
cfgv 3.1.0
channels 2.4.0
channels-redis 2.4.0
chardet 3.0.4
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django-redis 4.11.0
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django-taggit 1.1.0
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future 0.18.2
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google-auth 2.6.6
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h5py 3.6.0
hiredis 1.0.1
hyperlink 19.0.0
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idna 2.8
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mock 4.0.3
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tf-estimator-nightly 2.8.0.dev2021122109
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toml 0.10.0
torch 1.9.0 cu102
torchfile 0.1.0
torchvision 0.3.0
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traitlets 4.3.3
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wrapt 1.14.1
xlrd 1.2.0
xlwt 1.3.0
yarg 0.1.9
zipp 3.1.0
zope.interface 4.7.1234行 可以发现torchvision的版本是0.3.0
这时候突发奇想，要不升个级试试？
因为网上有的debug贴说要安装0.4.0的
说干就干，卸载0.3.0的
然后pip安装0.4.0的
然后再次导入
yesssssir
成功
接下来就开始torchvision之旅吧
let's GO！
