Add currying hometask

src/currying/currying.py

@@ -0,0 +1,37 @@
+def curry(func, n):
+    assert n >= 0, "Error: n can't be negative"
+    assert isinstance(n, int), "Error: n should be natural number"
+    if n == 0:
+            return func
+    else:
+        def start(arg):
+            args = [arg]
+            if n == 1:
+                return func(arg)
+            def continuation(arg):
+                args.append(arg)
+                if len(args) == n:
+                    return func(*args)
+                return continuation
+
+            return continuation
+
+        return start
+
+def uncurry(curried_func, n):
+    assert n >= 0, "Error: n can't be negative"
+    assert isinstance(n, int), "Error: n should be natural number"
+
+    if n == 0:
+        return curried_func
+    else:
+        def uncurried(*args):
+            assert len(args) == n, f"Error: {n} arguments expected, {len(args)} given"
+            if n == 1:
+                return curried_func(args[0]) 
+            result = curried_func
+            for arg in args:
+                result = result(arg)
+            return result
+
+    return uncurried

src/currying/currying_test.py

@@ -0,0 +1,27 @@
+from currying import curry, uncurry
+import pytest
+def summ(a, b):
+    return a + b
+
+def test_negative_n_curry():
+    with pytest.raises(AssertionError):
+        curry(summ, -1)
+
+def test_not_int_n_curry():
+    with pytest.raises(AssertionError):
+        curry(summ, 2.4)
+
+def test_negative_n_uncurry():
+    with pytest.raises(AssertionError):
+        uncurry(curry(summ, 2), -1)
+
+def test_not_int_n_uncurry():
+    with pytest.raises(AssertionError):
+        uncurry(curry(summ, 2), 2.4)
+
+def test_uncurry_wrong_args_count():
+    with pytest.raises(AssertionError):
+        uncurry(curry(summ, 2), 2)(1)(2)(3)
+
+def test_currying():
+    assert curry(summ, 2)(1)(5) == 6