added run_callable argument to allow returning unalled functions

pampy/pampy.py

@@ -142,7 +142,7 @@ def match_iterable(patterns, values) -> Tuple[bool, List]:
 
 
 
-def match(var, *args, default=NoDefault, strict=True):
+def match(var, *args, default=NoDefault, strict=True, run_callable=True):
     """
     Match `var` against a number of potential patterns.
 
@@ -181,7 +181,7 @@ def match(var, *args, default=NoDefault, strict=True):
 
         if matched_as_value:
             lambda_args = args if len(args) > 0 else BoxedArgs(var)
-            return run(action, lambda_args)
+            return run(action, lambda_args) if run_callable else action
 
     if default is NoDefault:
         if _ not in patterns:

tests/test_basic.py

@@ -152,4 +152,9 @@ class Color(Enum):
         self.assertEqual(match(Color.RED, Color.BLUE, "blue", Color.RED, "red", _, "else"), "red")
         self.assertEqual(match(Color.RED, Color.BLUE, "blue", Color.GREEN, "green", _, "else"), "else")
         self.assertEqual(match(1, Color.BLUE, "blue", Color.GREEN, "green", _, "else"), "else")
-
+
+    def test_match_no_run(self):
+        self.assertEqual(match(2, 2, lambda: 0, run_callable=False)(), 0)
+        def fn():
+            return "xyz"
+        self.assertEqual(match(2, 2, fn, run_callable=False), fn)