code: def flatten_scalar(e):
      """Flatten a 1x1 matrix to a scalar, return larger matrices unchanged."""
      if isinstance(e, MatrixBase):
          if e.shape == (1, 1):
              e = e[0]
      if isinstance(e, (numpy_ndarray, scipy_sparse_matrix)):
          if e.shape == (1, 1):
              e = complex(e[0, 0])
      return e
  
imports: from sympy.core.expr import Expr
  from sympy.core.numbers import I
  from sympy.core.singleton import S
  from sympy.matrices.matrixbase import MatrixBase
  from sympy.matrices import eye, zeros
  from sympy.external import import_module
label_desc: Use image node_id 8 for calling a global function with example usage: flatten_scalar(e) and returns: e