code: def test_Variable():
      v = Variable(x, type=real)
      assert v == Variable(v)
      assert v == Variable("x", type=real)
      assert v.symbol == x
      assert v.type == real
      assert value_const not in v.attrs
      assert v.func(*v.args) == v
      assert str(v) == "Variable(x, type=real)"
  
      w = Variable(y, f32, attrs={value_const})
      assert w.symbol == y
      assert w.type == f32
      assert value_const in w.attrs
      assert w.func(*w.args) == w
  
      v_n = Variable(n, type=Type.from_expr(n))
      assert v_n.type == integer
      assert v_n.func(*v_n.args) == v_n
      v_i = Variable(i, type=Type.from_expr(n))
      assert v_i.type == integer
      assert v_i != v_n
  
      a_i = Variable.deduced(i)
      assert a_i.type == integer
      assert Variable.deduced(Symbol("x", real=True)).type == real
      assert a_i.func(*a_i.args) == a_i
  
      v_n2 = Variable.deduced(n, value=3.5, cast_check=False)
      assert v_n2.func(*v_n2.args) == v_n2
      assert abs(v_n2.value - 3.5) < 1e-15
      raises(
          ValueError,
          lambda: Variable.deduced(n, value=3.5, cast_check=True),
      )
  
      v_n3 = Variable.deduced(n)
      assert v_n3.type == integer
      assert str(v_n3) == "Variable(n, type=integer)"
      assert Variable.deduced(z, value=3).type == integer
      assert Variable.deduced(z, value=3.0).type == real
      assert Variable.deduced(z, value=3.0 + 1j).type == complex_
  
imports: import math
  from sympy.core.containers import Tuple
  from sympy.core.numbers import nan, oo, Float, Integer
  from sympy.core.relational import Lt
  from sympy.core.symbol import symbols, Symbol
  from sympy.functions.elementary.trigonometric import sin
  from sympy.matrices.dense import Matrix
  from sympy.matrices.expressions.matexpr import MatrixSymbol
  from sympy.sets.fancysets import Range
  from sympy.tensor.indexed import Idx, IndexedBase
  from sympy.testing.pytest import raises
  from sympy.codegen.ast import Assignment, Attribute, aug_assign, CodeBlock, For, Type, Variable, Pointer, Declaration, AddAugmentedAssignment, SubAugmentedAssignment, MulAugmentedAssignment, DivAugmentedAssignment, ModAugmentedAssignment, value_const, pointer_const, integer, real, complex_, int8, uint8, float16, float32, float64, float80, float128, complex64, complex128, While, Scope, String, Print, QuotedString, FunctionPrototype, FunctionDefinition, Return, FunctionCall, untyped, IntBaseType, intc, Node, none, NoneToken, Token, Comment
label_desc: Use image node_id 18 for calling a global function with example usage: test_Variable() without return types