Do not use log colors on Windows, as the console there doesn't support ANSI

celery/app/base.py

@@ -1,4 +1,5 @@
 import sys
+import platform as _platform
 
 from datetime import timedelta
 from itertools import chain
@@ -74,6 +75,9 @@ class MultiDictView(AttributeDictMixin):
 
 class BaseApp(object):
     """Base class for apps."""
+    SYSTEM = _platform.system()
+    IS_OSX = SYSTEM == "Darwin"
+    IS_WINDOWS = SYSTEM == "Windows"
 
     def __init__(self, loader=None, backend=None, set_as_current=True):
         self.loader_cls = loader or "app"
@@ -259,6 +263,8 @@ class BaseApp(object):
         if c.get("CELERYD_LOG_COLOR") is None:
             c["CELERYD_LOG_COLOR"] = not c.CELERYD_LOG_FILE and \
                                         isatty(sys.stderr)
+            if self.IS_WINDOWS:  # windows console doesn't support ANSI colors
+                c["CELERYD_LOG_COLOR"] = False
         if isinstance(c.CELERY_TASK_RESULT_EXPIRES, int):
             c["CELERY_TASK_RESULT_EXPIRES"] = timedelta(
                     seconds=c.CELERY_TASK_RESULT_EXPIRES)

celery/apps/worker.py

@@ -1,6 +1,5 @@
 import logging
 import multiprocessing
-import platform as _platform
 import os
 import socket
 import sys
@@ -14,9 +13,6 @@ from celery.utils import get_full_cls_name, LOG_LEVELS
 from celery.worker import WorkController
 
 
-SYSTEM = _platform.system()
-IS_OSX = SYSTEM == "Darwin"
-
 STARTUP_INFO_FMT = """
 Configuration ->
     . broker -> %(conninfo)s
@@ -178,7 +174,7 @@ class Worker(object):
 
     def install_platform_tweaks(self, worker):
         """Install platform specific tweaks and workarounds."""
-        if IS_OSX:
+        if self.app.IS_OSX:
             self.osx_proxy_detection_workaround()
 
         # Install signal handler so SIGHUP restarts the worker.
@@ -186,7 +182,7 @@ class Worker(object):
             # only install HUP handler if detached from terminal,
             # so closing the terminal window doesn't restart celeryd
             # into the background.
-            if IS_OSX:
+            if self.app.IS_OSX:
                 # OS X can't exec from a process using threads.
                 # See http://github.com/ask/celery/issues#issue/152
                 install_HUP_not_supported_handler(worker)

celery/conf.py

@@ -1,3 +1,4 @@
+<<<<<<< HEAD
 """
 
 **DEPRECATED**