--- sympy-sympy-1.2/sympy/utilities/lambdify.py.orig	2018-08-14 12:45:57.659778760 +0200
+++ sympy-sympy-1.2/sympy/utilities/lambdify.py	2018-08-14 12:46:12.412849733 +0200
@@ -741,8 +741,7 @@
 
         return argstrs, expr
 
-    @staticmethod
-    def _subexpr(expr, dummies_dict):
+    def _subexpr(self, expr, dummies_dict):
         from sympy.matrices import DeferredVector
         from sympy import sympify
 
@@ -752,13 +751,13 @@
             if isinstance(expr, DeferredVector):
                 pass
             elif isinstance(expr, dict):
-                k = [sub_expr(sympify(a), dummies_dict) for a in expr.keys()]
-                v = [sub_expr(sympify(a), dummies_dict) for a in expr.values()]
+                k = [self._subexpr(sympify(a), dummies_dict) for a in expr.keys()]
+                v = [self._subexpr(sympify(a), dummies_dict) for a in expr.values()]
                 expr = dict(zip(k, v))
             elif isinstance(expr, tuple):
-                expr = tuple(sub_expr(sympify(a), dummies_dict) for a in expr)
+                expr = tuple(self._subexpr(sympify(a), dummies_dict) for a in expr)
             elif isinstance(expr, list):
-                expr = [sub_expr(sympify(a), dummies_dict) for a in expr]
+                expr = [self._subexpr(sympify(a), dummies_dict) for a in expr]
         return expr
 
     def _print_funcargwrapping(self, args):

--- sympy-sympy-1.2/sympy/utilities/tests/test_lambdify.py.orig	2018-08-14 12:46:10.396840035 +0200
+++ sympy-sympy-1.2/sympy/utilities/tests/test_lambdify.py	2018-08-14 12:46:12.413849738 +0200
@@ -883,3 +883,18 @@
     # Test that inspect.getsource works but don't hard-code implementation
     # details
     assert 'x**2' in inspect.getsource(f)
+
+def test_issue_14941():
+    x, y = Dummy(), Dummy()
+
+    # test dict
+    f1 = lambdify([x, y], {x: 3, y: 3}, 'sympy')
+    assert f1(2, 3) == {2: 3, 3: 3}
+
+    # test tuple
+    f2 = lambdify([x, y], (y, x), 'sympy')
+    assert f2(2, 3) == (3, 2)
+
+    # test list
+    f3 = lambdify([x, y], [y, x], 'sympy')
+    assert f3(2, 3) == [3, 2]