sample iterable example

python-temel/sample.iterable.py

@@ -0,0 +1,47 @@
+class SampleIterable:
+    def __init__(self, *args):
+        self._args = args
+
+    def __iter__(self):
+        return SampleIterator(self._args)
+
+    def __reversed__(self):
+        return SampleReverseIterator(self._args)
+
+class SampleIterator:
+    def __init__(self, args):
+        self._args = args
+        self._i = 0
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self._i == len(self._args):
+            raise StopIteration
+        self._i += 1
+
+        return self._args[self._i - 1]
+
+class SampleReverseIterator:
+    def __init__(self, args):
+        self._args = args
+        self._i = len(self._args) - 1
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self._i < 0:
+            raise StopIteration
+        self._i -= 1
+
+        return self._args[self._i + 1]
+
+for i in SampleIterable(1, 2, 3, 4, 5):
+    print(i, end = ' ')
+print()
+
+for i in reversed(SampleIterable(1, 2, 3, 4, 5)):
+    print(i, end = ' ')
+print()

python-temel/sample.iterable.py~

@@ -0,0 +1,47 @@
+class SampleIterable:
+    def __init__(self, *args):
+        self._args = args
+
+    def __iter__(self):
+        return SampleIterator(self._args)
+
+    def __reversed__(self):
+        return SampleReverseIterator(self._args)
+
+class SampleIterator:
+    def __init__(self, args):
+        self._args = args
+        self._i = 0
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self._i == len(self._args):
+            raise StopIteration
+        self._i += 1
+
+        return self._args(self._i - 1)
+
+class SampleReverseIterator:
+    def __init__(self, args):
+        self._args = args
+        self._i = len(self._args) - 1
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self._i < 0:
+            raise StopIteration
+        self._i -= 1
+
+        return self._args[self._i + 1]
+
+for i in SampleIterable(1, 2, 3, 4, 5):
+    print(i, end = ' ')
+print()
+
+for i in reversed(SampleIterable(1, 2, 3, 4, 5)):
+    print(i, end = ' ')
+print()