parameters: (self, number, what)
docstring: Shift the y-view according to NUMBER which is measured in
          "units" or "pages" (WHAT).
docstring_summary: Shift the y-view according to NUMBER which is measured in
          "units" or "pages" (WHAT).
docstring_tokens: Shift the y - view according to NUMBER which is measured in units or pages ( WHAT ) .
function: def yview_scroll(self, number, what):
          """Shift the y-view according to NUMBER which is measured in
          "units" or "pages" (WHAT)."""
          self.tk.call(self._w, 'yview', 'scroll', number, what)
function_tokens: def yview_scroll ( self , number , what ) : self . tk . call ( self . _w , 'yview' , 'scroll' , number , what )