Added files for Ecoanova's Python 3 course.

Ecoanova/Introduccion a Python 3/Ejemplos/generators.py

@@ -0,0 +1,46 @@
+####################
+# Generator object #
+####################
+
+def simple_generator():
+    i = 0
+    while(i < 10):
+        yield i
+        i += 1
+    raise StopIteration
+
+g = simple_generator()
+
+for i in g:
+    print(i)
+
+try:
+    print(next(g))
+except StopIteration:
+    print("Generator exhausted!")
+else:
+    print("Generator success!")
+finally:
+    print("At the end!")
+
+####################
+# Collection class #
+####################
+
+class Collection(object):
+    def __init__(self):
+        self.c = []
+
+    def add(self, x):
+        self.c.append(x)
+
+    def __iter__(self):
+        for i in self.c:
+            yield i
+
+c = Collection()
+c.add(1)
+c.add(2)
+c.add(3)
+for i in c:
+    print(i)