class_docstr: A printer which converts an expression into its Python interpretation.
class_docstr_tok: ["A","printer","which","converts","an","expression","into","its","Python","interpretation","."]
code: def _print_Symbol(self, expr):
      symbol = self._str(expr)
      if symbol not in self.symbols:
          self.symbols.append(symbol)
      return StrPrinter._print_Symbol(self, expr)
  
file_path: sympy/sympy/printing/python.py
imports: import keyword
  import sympy
  from .repr import ReprPrinter
  from .str import StrPrinter
label_desc: Use image node_id 3 for calling the PythonPrinter obj's underlying member method code with example usage: obj._print_Symbol(expr) and returns: StrPrinter