No module named ‘requests‘的问题及解决

项目中执行 import torchxrayvision as xrv，解决了No module named ‘skimage‘、No module named ‘tqdm‘、No module named ‘pandas‘、No module named ‘pydicom‘的问题后出现以下错误：

Traceback (most recent call last):
  File "D:/研究生/毕业设计/COVID19/COVID19_CT/conduct.py", line 14, in <module>
    import torchxrayvision as xrv
  File "D:\研究生\毕业设计\COVID19\COVID19_CT\torchxrayvision\__init__.py", line 2, in <module>
    from . import models
  File "D:\研究生\毕业设计\COVID19\COVID19_CT\torchxrayvision\models.py", line 229, in <module>
    import requests
ModuleNotFoundError: No module named 'requests'

既然是因为缺少requests文件所引起的报错，那么我们就通过pip install requests命令来安装它。 

Looking in indexes: https://mirrors.aliyun.com/pypi/simple
Collecting requests
  Downloading https://mirrors.aliyun.com/pypi/packages/45/1e/0c169c6a5381e241ba7404532c16a21d86ab872c9bed8bdcd4c423954103/requests-2.24.0-py2.py3-none-any.whl (61 kB)
     |████████████████████████████████| 61 kB 173 kB/s
Collecting idna<3,>=2.5
  Downloading https://mirrors.aliyun.com/pypi/packages/a2/38/928ddce2273eaa564f6f50de919327bf3a00f091b5baba8dfa9460f3a8a8/idna-2.10-py2.py3-none-any.whl (58 kB)
     |████████████████████████████████| 58 kB 1.7 MB/s
Requirement already satisfied: certifi>=2017.4.17 in d:\anaconda3\envs\pytorch_1.4_gpu\lib\site-packages (from requests) (2020.6.20)
Collecting chardet<4,>=3.0.2
  Downloading https://mirrors.aliyun.com/pypi/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl (133 kB)
     |████████████████████████████████| 133 kB 3.3 MB/s
Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1
  Downloading https://mirrors.aliyun.com/pypi/packages/9f/f0/a391d1463ebb1b233795cabfc0ef38d3db4442339de68f847026199e69d7/urllib3-1.25.10-py2.py3-none-any.whl (127 kB)
     |████████████████████████████████| 127 kB 3.3 MB/s
Installing collected packages: idna, chardet, urllib3, requests
Successfully installed chardet-3.0.4 idna-2.10 requests-2.24.0 urllib3-1.25.10
 

问题解决。