Pyright with nvim_lspconfig: weird errors about importing and exporting stuff

Language Server Protocol (LSP)
1

I have no idea why there are so many warnings as follows.
Note that the code works fine, and I can use something like cp.Variable but pyright keeps saying that
"Variable" is not exported from module cvxpy.

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  1. How to make it work properly?
  2. Is there any way to configure settings to make some exceptions? For example, I wanna avoid some checks of PEPxyz, PEPabc, etc.