parameters: (self, tagName, index1, index2=None)
return_statement: return self.tk.splitlist(self.tk.call(
              self._w, 'tag', 'prevrange', tagName, index1, index2))
docstring: Return a list of start and end index for the first sequence of
          characters between INDEX1 and INDEX2 which all have tag TAGNAME.
          The text is searched backwards from INDEX1.
docstring_summary: Return a list of start and end index for the first sequence of
          characters between INDEX1 and INDEX2 which all have tag TAGNAME.
          The text is searched backwards from INDEX1.
docstring_tokens: Return a list of start and end index for the first sequence of characters between INDEX1 and INDEX2 which all have tag TAGNAME . The text is searched backwards from INDEX1 .
function: def tag_prevrange(self, tagName, index1, index2=None):
          """Return a list of start and end index for the first sequence of
          characters between INDEX1 and INDEX2 which all have tag TAGNAME.
          The text is searched backwards from INDEX1."""
          return self.tk.splitlist(self.tk.call(
              self._w, 'tag', 'prevrange', tagName, index1, index2))
function_tokens: def tag_prevrange ( self , tagName , index1 , index2 = None ) : return self . tk . splitlist ( self . tk . call ( self . _w , 'tag' , 'prevrange' , tagName , index1 , index2 ) )