Hide traceback caused by KeyboardInterrupt.

Use a decorator to not indent the whole function.

apachedex/__init__.py

@@ -1212,6 +1212,16 @@ def getTZInfo(tz):
     _tz_cache[tz] = tzi = AutoTZInfo(tz)
     return tzi
 
+def _gracefulExit(*class_list):
+  @functools.wraps(func)
+  def wrapper(*args, **kw):
+    try:
+      return func(*args, **kw)
+    except KeyboardInterrupt:
+      sys.exit(1)
+  return wrapper
+
+@_gracefulExit
 def main():
   parser = ShlexArgumentParser(description='Compute Apdex out of '
     'apache-style log files', fromfile_prefix_chars='@')