Ubuntu18.04下PyCharm旧版本隐藏文件夹能否安全删除？

Absolutely! You can safely delete those .PyCharm2019.1, .PyCharm2019.2, and .PyCharm2019.3 folders without causing any issues to your current PyCharm Professional 2020.1 installation or your local projects. Here's why:

• Each PyCharm version stores its configuration, plugin caches, local history, and even environment-specific data (like the pre-trained models you suspect) in its own dedicated hidden folder. These are completely isolated from other versions—your 2020.1 setup uses its own .PyCharm2020.1 directory, so deleting the old ones won't touch any of your current settings or project data.
• Since you don't plan to use those 2019.x versions anymore, there's no reason to keep them around. The large size you're seeing is almost certainly from cached assets like pre-trained models, plugin binaries, or old project indexes that are no longer useful.

Quick notes before deleting: #

• If you're feeling cautious, you can back up one of the folders to an external drive first (e.g., cp -r ~/.PyCharm2019.1 ~/PyCharm2019.1-backup) to confirm nothing breaks after deletion.
• To delete all 2019.x folders at once, you can run this command in your terminal:

  rm -rf ~/.PyCharm2019.*
  

  Just double-check the path to avoid accidentally deleting the wrong directory!

内容的提问来源于stack exchange，提问作者Carlo