add example

python/examples/iterators/range-with-steps/count.out

@@ -0,0 +1,7 @@
+1
+2
+3
+---
+2
+3
+4

python/examples/iterators/range-with-steps/count.py

@@ -0,0 +1,5 @@
+import it
+
+r = it.Range(1, 6, 2.2)
+for n in r:
+    print(n)

python/examples/iterators/range-with-steps/it.py

@@ -0,0 +1,15 @@
+class Range():
+    def __init__(self, start, end, step):
+        self.current = start
+        self.end = end
+        self.step = step
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self.current >= self.end:
+            raise StopIteration
+        v = self.current
+        self.current += self.step
+        return v

python/iterators.md

@@ -87,6 +87,14 @@ In many aspects it behaves as an iterator. Specifically it allows us to iterate
 ![](examples/iterators/range.out)
 
 
+## Range with floating point steps
+{id: range-with-floating-point-steps}
+
+![](examples/iterators/range-with-steps/count.py)
+![](examples/iterators/range-with-steps/it.py)
+![](examples/iterators/range-with-steps/count.out)
+
+
 ## Iterator: a counter
 {id: iterator-counter}
 {i: StopIteration }