Initial commit - fix problems & refactor code

examples/TR.py

@@ -0,0 +1,27 @@
+from typing import Callable
+
+class TR:
+    def __init__(self, f, *args, **kwargs):
+        self.f = f
+        self.args = args
+        self.kwargs = kwargs
+    def __call__(self):
+        return self.f(*self.args, **self.kwargs)
+
+def evalTR(value):
+    while isinstance(value, TR):
+        value = value()
+    return value
+
+def suman(n, acc):
+    return acc if n <= 0 else TR(suman, n - 1, acc + n)
+
+def isOdd(n):
+    return False if n == 0 else TR(isEven, n - 1)
+
+def isEven(n):
+    return True if n == 0 else TR(isOdd, n - 1)
+
+while n := int(input()):
+    print(evalTR(suman(n, 0)))
+    # print(evalTR(isEven(n)), evalTR(isOdd(n)))