class_docstr: Printer which converts a SymPy expression into a maple code.
code: def _print_tuple(self, expr):
      return self._print(list(expr))
  
imports: from sympy.core import S
  from sympy.core.numbers import Integer, IntegerConstant, equal_valued
  from sympy.printing.codeprinter import CodePrinter
  from sympy.printing.precedence import precedence, PRECEDENCE
  import sympy
label_desc: Use image node_id 6 for calling the MapleCodePrinter obj's underlying member method code with example usage: obj._print_tuple(expr) and returns: self