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• If you are not working on Python, the simplest solution is to not build it, i.e. only build the module that you're interested in.
• If you do need to build Python, follow the instructions here: Set up IntelliJ for Python development

Compilation failed with exit code 1; see the compiler error output for details.

This appears to be caused by poor parsing of the Gradle log by IntelliJ. In the log pane there is a button to toggle to the raw console.

IntelliJ can't load large files

(stack overflow post)

• In IntelliJ 2016 and higher: go to Help → Edit Custom Properties → Paste the following inside the properties file:

  Code Block
  language text
  #--------------------------------------------------------------------- # Maximum file size (kilobytes) IDE should provide code assistance for. # The larger file is the slower its editor works and higher overall system memory requirements are # if code assistance is enabled. Remove this property or set to very large number if you need # code assistance for any files available regardless their size. #--------------------------------------------------------------------- idea.max.intellisense.filesize=2500

  
  

IntelliJ can't recognize Python files

(stack overflow post):

• Press CTRL + ALT + SHIT + S → Go to Project Settings → Facets → expand Python → click on child → Python Interpreter
• Project Settings → Modules → Expand module → Python → Dependencies → select Python module SDK

TODO: Add more common FAQ issues 

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