code: def str_base(self):
      return ", ".join(str(a) for a in self.args)
  
imports: from sympy.core.basic import Basic
  from sympy.core.symbol import Symbol, symbols
  from sympy.utilities.lambdify import lambdify
  from .util import interpolate, rinterpolate, create_bounds, update_bounds
  from sympy.utilities.iterables import sift
label_desc: Use image node_id 10 for calling the ColorScheme obj's underlying member method code with example usage: obj.str_base() and returns: str