added Try

tests/test_try.py

@@ -0,0 +1,42 @@
+import unittest
+from pwo import Try
+
+
+class TestException(Exception):
+
+    def __init__(self, msg: str):
+        super().__init__(msg)
+
+
+class TryTest(unittest.TestCase):
+
+    def setUp(self):
+        pass
+
+    def test_try(self):
+
+        with self.subTest("Test failure"):
+            def throw_test_exception():
+                raise TestException("error")
+
+            t = Try.of(throw_test_exception)
+
+            with self.assertRaises(TestException):
+                t.get()
+
+            t = Try.failure(TestException("error"))
+
+            with self.assertRaises(TestException):
+                t.get()
+
+        with self.subTest("Test success"):
+            def complete_successfully():
+                return 42
+
+            t = Try.of(complete_successfully)
+
+            self.assertEqual(42, t.get())
+
+            t2 = t.handle(lambda value, err: value * 2)
+            self.assertEqual(84, t2.get())
+