How to get a TkInter file selection dialogbox to work with IPython / Spyder?

Before running the code above, you need to set the right event loop (in this case Tk), as you correctly guessed.

To do that you need to run this command:

In [1]: %gui tk

and then run your code.

Note: To access the documentation about the %gui magic in Spyder, you need to place the cursor in front of %gui and press Ctrl+I, like this

In [1]: %gui<Ctrl+I>

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