项目中执行 import torchxrayvision as xrv，解决了No module named ‘skimage‘的问题后，紧跟着出现以下错误：

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 1, in <module>
    from . import datasets
  File "D:\研究生\毕业设计\COVID19\COVID19_CT\torchxrayvision\datasets.py", line 8, in <module>
    from tqdm import tqdm
ModuleNotFoundError: No module named 'tqdm'

Process finished with exit code 1

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

Looking in indexes: https://mirrors.aliyun.com/pypi/simple
Collecting tqdm
  Downloading https://mirrors.aliyun.com/pypi/packages/28/7e/281edb5bc3274dfb894d90f4dbacfceaca381c2435ec6187a2c6f329aed7/tqdm-4.48.2-py2.py3-none-any.whl (68 kB)
     |████████████████████████████████| 68 kB 1.1 MB/s
Installing collected packages: tqdm
Successfully installed tqdm-4.48.2
 

问题解决。