1 files changed, 29 insertions, 0 deletions
diff --git a/challenge-142/sgreen/python/ch-2.py b/challenge-142/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..1aebb131da
--- /dev/null
+++ b/challenge-142/sgreen/python/ch-2.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+import sys
+from time import sleep
+from threading import Thread
+
+
+def _sleep_sort(seconds):
+    sleep(float(seconds))
+    print(seconds)
+
+
+def main(inputs):
+    threads = []
+
+    if any(float(x) < 0 for x in inputs):
+        raise ValueError('You can sort negative numbers')
+
+    for seconds in inputs:
+        new_thread = Thread(target=_sleep_sort, args=(seconds,))
+        threads.append(new_thread)
+        new_thread.start()
+
+    for t in threads:
+        t.join()
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])