update from Atlas with major reorg

attic/concurrency/wikipedia/orig/futureprocs.py

@@ -0,0 +1,36 @@
+"""
+Wikipedia Picture of the Day (POTD) download example
+
+Inspired by example at:
+https://docs.python.org/3/library/concurrent.futures.html#threadpoolexecutor-example
+"""
+
+from concurrent import futures
+
+import potd
+
+def save_month(year_month, verbose):
+    year, month = [int(s) for s in year_month.split('-')]
+    total_size = 0
+    img_count = 0
+    dates = potd.list_days_of_month(year, month)
+
+    with futures.ProcessPoolExecutor(max_workers=100) as executor:
+        downloads = dict((executor.submit(potd.save_one, date, verbose), date)
+                             for date in dates)
+
+        for future in futures.as_completed(downloads):
+            date = downloads[future]
+            if future.exception() is not None:
+                print('%r generated an exception: %s' % (date,
+                                                         future.exception()))
+            else:
+                img_size = future.result()
+                total_size += img_size
+                img_count += 1
+                print('%r OK: %r' % (date, img_size))
+
+    return img_count, total_size
+
+if __name__ == '__main__':
+    potd.main(save_month=save_month)