Indexing - PyCharm Help
https://www.jetbrains.com/help/pycharm/indexing.html15.06.2021 · Indexing in PyCharm is responsible for the core features of the IDE: code completion, inspections, finding usages, navigation, syntax highlighting, and refactorings. It starts when you open your project, switch between branches, after you load or unload plugins, and after large external file updates. For example, this can happen if multiple ...