No module named ‘pandas‘的问题及解决

项目中执行 import torchxrayvision as xrv，解决了No module named ‘skimage‘和No module named ‘tqdm‘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 1, in <module>
    from . import datasets
  File "D:\研究生\毕业设计\COVID19\COVID19_CT\torchxrayvision\datasets.py", line 11, in <module>
    import pandas as pd
ModuleNotFoundError: No module named 'pandas'

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

Looking in indexes: https://mirrors.aliyun.com/pypi/simple
Collecting pandas
  Downloading https://mirrors.aliyun.com/pypi/packages/cb/69/d2a9673f2fbb96f072c28f3bf1f3a249dc1f28395fb7dce98dfd0fe25885/pandas-1.1.0-cp37-cp37m-win_amd64.whl (9.4 MB)
     |████████████████████████████████| 9.4 MB 2.2 MB/s
Requirement already satisfied: python-dateutil>=2.7.3 in d:\anaconda3\envs\pytorch_1.4_gpu\lib\site-packages (from pandas) (2.8.1)
Requirement already satisfied: numpy>=1.15.4 in d:\anaconda3\envs\pytorch_1.4_gpu\lib\site-packages (from pandas) (1.19.1)
Collecting pytz>=2017.2
  Downloading https://mirrors.aliyun.com/pypi/packages/4f/a4/879454d49688e2fad93e59d7d4efda580b783c745fd2ec2a3adf87b0808d/pytz-2020.1-py2.py3-none-any.whl (510 kB)
     |████████████████████████████████| 510 kB 6.4 MB/s
Requirement already satisfied: six>=1.5 in d:\anaconda3\envs\pytorch_1.4_gpu\lib\site-packages (from python-dateutil>=2.7.3->pandas) (1.15.0)
Installing collected packages: pytz, pandas
Successfully installed pandas-1.1.0 pytz-2020.1
 

问题解决。