code: def _eval_is_eq(lhs, rhs):  # noqa:F811
      """Helper method for Equality with matrices.sympy.
  
      Relational automatically converts matrices to ImmutableDenseMatrix
      instances, so this method only applies here.  Returns True if the
      matrices are definitively the same, False if they are definitively
      different, and None if undetermined (e.g. if they contain Symbols).
      Returning None triggers default handling of Equalities.
  
      """
      if lhs.shape != rhs.shape:
          return False
      return (lhs - rhs).is_zero_matrix
  
imports: from mpmath.matrices.matrices import _matrix
  from sympy.core import Basic, Dict, Tuple
  from sympy.core.numbers import Integer
  from sympy.core.cache import cacheit
  from sympy.core.sympify import _sympy_converter, _sympify
  from sympy.matrices.dense import DenseMatrix
  from sympy.matrices.expressions import MatrixExpr
  from sympy.matrices.matrixbase import MatrixBase
  from sympy.matrices.repmatrix import RepMatrix
  from sympy.matrices.sparse import SparseRepMatrix
  from sympy.multipledispatch import dispatch
label_desc: Use image node_id 3 for calling a global function with example usage: _eval_is_eq(lhs, rhs) and returns: unknown, False