Data commit

Task/Synchronous-concurrency/Python/synchronous-concurrency-1.py

@@ -0,0 +1,31 @@
+import sys
+from Queue import Queue
+from threading import Thread
+
+lines = Queue(1)
+count = Queue(1)
+
+def read(file):
+    try:
+        for line in file:
+            lines.put(line)
+    finally:
+        lines.put(None)
+    print count.get()
+
+def write(file):
+    n = 0
+    while 1:
+        line = lines.get()
+        if line is None:
+            break
+        file.write(line)
+        n += 1
+    count.put(n)
+
+reader = Thread(target=read, args=(open('input.txt'),))
+writer = Thread(target=write, args=(sys.stdout,))
+reader.start()
+writer.start()
+reader.join()
+writer.join()

Task/Synchronous-concurrency/Python/synchronous-concurrency-2.py

@@ -0,0 +1,12 @@
+count = 0
+
+def reader():
+    for line in open('input.txt'):
+        yield line.rstrip()
+    print('Printed %d lines.' % count)
+
+r = reader()
+# printer
+for line in r:
+    print(line)
+    count += 1

Task/Synchronous-concurrency/Python/synchronous-concurrency-3.py

@@ -0,0 +1,17 @@
+def reader():
+    for line in open('input.txt'):
+        yield line.rstrip()
+    count = yield None
+    print('Printed %d lines.' % count)
+
+r = reader()
+
+# printer
+for count, line in enumerate(r):
+    if line is None:
+        break
+    print(line)
+try:
+    r.send(count)
+except StopIteration:
+    pass