#NEWLINE# def _print_Function( self , expr ) : #NEWLINE# #INDENT# func = expr . func . __name__ #NEWLINE# if ( ( not hasattr ( sympy , func ) ) and ( not ( func in self . functions ) ) ) : #NEWLINE# #INDENT# self . functions . append ( func ) #NEWLINE# #UNINDENT# return StrPrinter . _print_Function ( self , expr )