September Morn Update

Task/Concurrent-computing/Python/concurrent-computing-5.py

@@ -1,9 +1,14 @@
-from __future__ import print_function
-from multiprocessing import Pool
+import random, sys, time
+import threading
 
-def main():
-    p = Pool()
-    p.map(print, 'Enjoy Rosetta Code'.split())
+lock = threading.Lock()
 
-if __name__=="__main__":
-    main()
+def echo(s):
+    time.sleep(1e-2*random.random())
+    # use `.write()` with lock due to `print` prints empty lines occasionally
+    with lock:
+        sys.stdout.write(s)
+        sys.stdout.write('\n')
+
+for line in 'Enjoy Rosetta Code'.split():
+    threading.Thread(target=echo, args=(line,)).start()