updated from Atlas

attic/control/adder/soma.py

@@ -0,0 +1,39 @@
+
+if 'raw_input' in dir(__builtins__):
+    input = raw_input  # para funcionar com Python 2
+
+def ler_num():
+    num = input('+: ')
+    try:
+        num = float(num)
+    except ValueError:
+        return 0
+    return num
+
+def somadora():
+    qt_parcelas = 0
+    total = 0
+    try:
+        while True:
+            parcela = yield
+            qt_parcelas += 1
+            total += parcela
+            print('parcelas: %d  total: %d' % (qt_parcelas, total))
+
+    finally:
+        print('parcelas: %d  total: %d  media: %d' % (qt_parcelas, total, total/qt_parcelas))
+
+def main():
+    coro = somadora()
+    next(coro)
+    while True:
+        item = ler_num()
+        if item:
+            coro.send(item)
+        else:
+            print('Fechando corotina...')
+            coro.close()
+            break
+
+if __name__=='__main__':
+    main()