Move SignalExit to errors.py

certbot/error_handler.py

@@ -5,6 +5,7 @@ import os
 import signal
 import traceback
 
+from certbot import errors
 
 logger = logging.getLogger(__name__)
 
@@ -19,14 +20,6 @@ _SIGNALS = ([signal.SIGTERM] if os.name == "nt" else
              signal.SIGXCPU, signal.SIGXFSZ])
 
 
-class SignalExit(Exception):
-    """This exception is used stop of execution of the code in the body of the
-    ErrorHandler context manager.
-
-    """
-    pass
-
-
 class ErrorHandler(object):
     """Registers functions to be called if an exception or signal occurs.
 
@@ -62,7 +55,7 @@ class ErrorHandler(object):
     def __exit__(self, exec_type, exec_value, trace):
         self.body_executed = True
         retval = False
-        if exec_type is SignalExit:
+        if exec_type is errors.SignalExit:
             logger.debug("Encountered signals: %s", self.received_signals)
             self.call_registered()
             for signum in self.received_signals:
@@ -120,7 +113,7 @@ class ErrorHandler(object):
         """
         self.received_signals.append(signum)
         if not self.body_executed:
-            raise SignalExit
+            raise errors.SignalExit
 
     def call_signal(self, signum):
         """Calls the signal given by signum.

certbot/errors.py

@@ -29,6 +29,10 @@ class HookCommandNotFound(Error):
     """Failed to find a hook command in the PATH."""
 
 
+class SignalExit(Error):
+    """A Unix signal was recieved while in the ErrorHandler context manager."""
+
+
 # Auth Handler Errors
 class AuthorizationError(Error):
     """Authorization error."""