Should I ignore the .idea folder when using PyCharm with Git?

While sharing your project settings isn't inherently a bad idea, there are several exceptions and potential issues you should be aware of.

• The workspace.xml file contains various user-specific settings, such as environment variables, cursor position, and Python SDK location.
  • Environmental variables may include private data, such as usernames and passwords
• The dictionaries folder contains custom spellings, which can cause conflicts if two developers have the same name.
• The .idea folder is PyCharm specific, meaning developers using a different IDE can lead to project desynchronization.
• IntelliJ's own documentation includes several warnings for specific files that shouldn't be shared.

If you do decide to share .idea, IntelliJ's official documentation gives the following advice

[The .idea] format is used by all the recent IDE versions by default. Here is what you need to share:

• All the files under .idea directory in the project root except the workspace.xml and tasks.xml files which store user specific settings
• All the .iml module files that can be located in different module directories (applies to IntelliJ IDEA)

Be careful about sharing the following:

• Android artifacts that produce a signed build (will contain keystore passwords)
• In IDEA 13 and earlier dataSources.ids, datasources.xml can contain database passwords. IDEA 14 solves this problem.

You may consider not to share the following:

• .iml files for the Gradle or Maven based projects, since these files will be generated on import
• gradle.xml file, see this discussion
• user dictionaries folder (to avoid conflicts if other developer has the same name)
• XML files under .idea/libraries in case they are generated from Gradle or Maven project

Source: JetBrains - How to manage projects under Version Control Systems

All the settings files in the .idea directory should be put under version control except the workspace.xml, which stores your local preferences. The workspace.xml file should be marked as ignored by VCS.

-PyCharm 2017.3 project documentation

To explain further, workspace.xml contains user-specific workspace preferences. This includes environment variables, recently accessed files, and cursor position.

Ignoring the whole .idea folder is not necessarily the best idea. There's a number of similar discussions here about this.

• How to deal with IntelliJ IDEA project files under Git source control constantly changing?
• Intellij Idea 9/10, what folders to check into (or not check into) source control?
• Should the .idea folder be kept under source control?

But I suggest to check the official FAQ on this matter.

I found some issue when include whole .idea/ directory into project.

If you push to git repo including .idea/ directory, and clone that project on other machine with pycharm, pycharm can't recognize the project appropriately.

After delete .idea/ directory, pycharm recognize the project well.