Install packages

1. Start typing the package name in the search field of the Python Packages tool window. The matching packages are displayed.

If the current Python interpreter is a conda virtual environment, the packages available in the conda package repository are also displayed.

2. Select the package and then do one of the following: . Click Install next to the package name and choose the version.

. Choose the version from the list of available versions and click Install.

You can use the pip install command-line options during the installation: . Right-click next to the package name and select Install with Options. . In the dialog that opens, enter the required options and click OK. Packages installed with conda or pip are marked with the corresponding icons.

3. If a popup with an error message appears, refer to the Troubleshooting guide for a solution.

在项目的main的文件夹上(如果你的代码都放到main中的话)点击右键，如下图

然后在 Mark Directory as --> Sources Root，如下图：

这是一种可能的原因，仅供参考。