so sad.. backporting with statements in test_autocast

theano/tensor/tests/test_basic.py

@@ -2224,22 +2224,40 @@ def test_autocast():
     orig_autocast = autocast_float.dtypes
 
     # test that autocast_float_as sets the autocast dtype correctly
-    with autocast_float_as('float32') as ac:
+    try: #ghetto 2.4 version of with
+        ac = autocast_float_as('float32')
+        ac.__enter__()
         assert autocast_float.dtypes == ('float32',)
+    finally:
+        ac.__exit__()
     assert autocast_float.dtypes == orig_autocast
-    with autocast_float_as('float64') as ac:
+    try: #ghetto 2.4 version of with
+        ac = autocast_float_as('float64')
+        ac.__enter__()
         assert autocast_float.dtypes == ('float64',)
+    finally:
+        ac.__exit__()
     assert autocast_float.dtypes == orig_autocast
     # test that we can set it back to something, and nest it
-    with autocast_float_as('float32') as ac:
+    try: #ghetto 2.4 version of with
+        ac = autocast_float_as('float32')
+        ac.__enter__()
         assert autocast_float.dtypes == ('float32',)
-        with autocast_float_as('float64') as ac:
+        try: #ghetto 2.4 version of with
+            ac2 = autocast_float_as('float64')
+            ac2.__enter__()
             assert autocast_float.dtypes == ('float64',)
+        finally:
+            ac2.__exit__()
         assert autocast_float.dtypes == ('float32',)
+    finally:
+        ac.__exit__()
     assert autocast_float.dtypes == orig_autocast
 
     # test that the autocasting dtype is used correctly in expression-building
-    with autocast_float_as('float32') as ac:
+    try: #ghetto 2.4 version of with
+        ac = autocast_float_as('float32')
+        ac.__enter__()
         assert (dvector()+ 1.1).dtype == 'float64'
         assert (fvector()+ 1.1).dtype == 'float32'
         assert (fvector()+ numpy.asarray(1.1,dtype='float64')).dtype == 'float64'
@@ -2247,9 +2265,13 @@ def test_autocast():
 
         assert (dvector()+ 1).dtype == 'float64'
         assert (fvector()+ 1).dtype == 'float32'
+    finally:
+        ac.__exit__()
 
     # test that the autocasting dtype is used correctly in expression-building
-    with autocast_float_as('float64') as ac:
+    try: #ghetto 2.4 version of with
+        ac = autocast_float_as('float64')
+        ac.__enter__()
         assert (dvector()+ 1.1).dtype == 'float64'
         assert (fvector()+ 1.1).dtype == 'float64'
         assert (fvector()+ 1.0).dtype == 'float64'
@@ -2258,14 +2280,24 @@ def test_autocast():
 
         assert (dvector()+ 1).dtype == 'float64'
         assert (fvector()+ 1).dtype == 'float32'
+    finally:
+        ac.__exit__()
 
     # test that the autocasting dtype is used correctly in expression-building
-    with autocast_float_as('float32', 'float64') as ac:
+    try: #ghetto 2.4 version of with
+        ac = autocast_float_as('float32', 'float64')
+        ac.__enter__()
         assert (dvector()+ 1.1).dtype == 'float64'
         assert (fvector()+ 1.1).dtype == 'float64'
         assert (fvector()+ 1.0).dtype == 'float32'
-        with autocast_float_as('float64') as ac:
+        try: #ghetto 2.4 version of with
+            ac2 = autocast_float_as('float64')
+            ac2.__enter__()
             assert (fvector()+ 1.0).dtype == 'float64'
+        finally:
+            ac2.__exit__()
+    finally:
+        ac.__exit__()
 
 if __name__ == '__main__':
     if len(sys.argv) >= 2 and sys.argv[1] == 'OPT':