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Since the basic module has been updated to the new version, if the imported or the old version of the program, the program will automatically import the module plus the crossbar above, with the mouse on the module to be introduced, there will be a prompt, follow the prompts to re Download the new module, and import statements to modify.
Such as importing import xray, xray will add a horizontal line at the top, re-download the new module, the import statement can be changed to import xarray as xr