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How to turn on/off code analysis features in Spyder 4

After updating Spyder to 4.0.0, I cannot see any checkbox to turn on or off the "Real-time code analysis"

Here we can see the menu steps that cannot be found anymore: How to suppress a certain warning in Spyder editor? Which contains: You need to go to [Tools > Preferences > Editor > Code Introspection/Analysis and deactivate the option called Real-time code analysis]

For versions up to 4.1.3 inclusive, there are the following problems, probably only on Windows:

  • I am not able to turn on the warnings that e.g. show which variables are unknown. Normally, if i move code to a separate function, I find out all the needed parameters for the function by just scrolling through the red lines in the code.

  • Even the normal code completion does not work. First, nothing is popping up after 3 letters entered after the dot. And then, when Spyder seems to start searching, it is not reacting anymore.

Solution

  • (Spyder maintainer here) Code analysis options in Spyder 4 were significantly expanded and moved to a new entry in our preferences called Completion and linting, as shown below:

    enter image description here

    To deactivate all linting (which was called before "Real-time code analysis"), you need to turn off the option called Enable basic linting in the screenshot above.

    Please update to version 4.1.4 or higher to avoid the mentioned bug on Windows.