parameters: (self, item)
return_statement: return bool(self.tk.call(self._w, "exists", item))
docstring: Returns True if the specified item is present in the tree,
          False otherwise.
docstring_summary: Returns True if the specified item is present in the tree,
          False otherwise.
docstring_tokens: Returns True if the specified item is present in the tree False otherwise .
function: def exists(self, item):
          """Returns True if the specified item is present in the tree,
          False otherwise."""
          return bool(self.tk.call(self._w, "exists", item))
function_tokens: def exists ( self , item ) : return bool ( self . tk . call ( self . _w , "exists" , item ) )