Data commit

Task/Handle-a-signal/Python/handle-a-signal-1.py

@@ -0,0 +1,15 @@
+import time
+
+def counter():
+    n = 0
+    t1 = time.time()
+    while True:
+        try:
+            time.sleep(0.5)
+            n += 1
+            print n
+        except KeyboardInterrupt, e:
+            print 'Program has run for %5.3f seconds.' % (time.time() - t1)
+            break
+
+counter()

Task/Handle-a-signal/Python/handle-a-signal-2.py

@@ -0,0 +1,18 @@
+import time
+
+def intrptWIN():
+   procDone = False
+   n = 0
+
+   while not procDone:
+      try:
+         time.sleep(0.5)
+         n += 1
+         print n
+      except KeyboardInterrupt, e:
+         procDone = True
+
+t1 = time.time()
+intrptWIN()
+tdelt = time.time() - t1
+print 'Program has run for %5.3f seconds.' % tdelt

Task/Handle-a-signal/Python/handle-a-signal-3.py

@@ -0,0 +1,29 @@
+import signal, time, threading
+done = False
+n = 0
+
+def counter():
+   global n, timer
+   n += 1
+   print n
+   timer = threading.Timer(0.5, counter)
+   timer.start()
+
+def sigIntHandler(signum, frame):
+   global done
+   timer.cancel()
+   done = True
+
+def intrptUNIX():
+   global timer
+   signal.signal(signal.SIGINT, sigIntHandler)
+
+   timer = threading.Timer(0.5, counter)
+   timer.start()
+   while not done:
+      signal.pause()
+
+t1 = time.time()
+intrptUNIX()
+tdelt = time.time() - t1
+print 'Program has run for %5.3f seconds.' % tdelt

Task/Handle-a-signal/Python/handle-a-signal-4.py

@@ -0,0 +1,23 @@
+import time, signal
+
+class WeAreDoneException(Exception):
+    pass
+
+def sigIntHandler(signum, frame):
+    signal.signal(signal.SIGINT, signal.SIG_DFL) # resets to default handler
+    raise WeAreDoneException
+
+t1 = time.time()
+
+try:
+    signal.signal(signal.SIGINT, sigIntHandler)
+    n = 0
+    while True:
+        time.sleep(0.5)
+        n += 1
+        print n
+except WeAreDoneException:
+    pass
+
+tdelt = time.time() - t1
+print 'Program has run for %5.3f seconds.' % tdelt