Merge pull request #313 from ShenYuhan/gix_windows_gunicorn

fix windows gunicorn dependment.

paddlehub/commands/serving.py

@@ -26,14 +26,22 @@ import paddlehub as hub
 from paddlehub.commands.base_command import BaseCommand, ENTRY
 from paddlehub.serving import app_single as app
 import multiprocessing
-import gunicorn.app.base
 
+if platform.system() == "Windows":
 
-def number_of_workers():
-    return (multiprocessing.cpu_count() * 2) + 1
+    class StandaloneApplication(object):
+        def __init__(self):
+            pass
 
+        def load_config(self):
+            pass
+
+        def load(self):
+            pass
+else:
+    import gunicorn.app.base
 
-class StandaloneApplication(gunicorn.app.base.BaseApplication):
+    class StandaloneApplication(gunicorn.app.base.BaseApplication):
         def __init__(self, app, options=None):
             self.options = options or {}
             self.application = app
@@ -52,6 +60,10 @@ class StandaloneApplication(gunicorn.app.base.BaseApplication):
             return self.application
 
 
+def number_of_workers():
+    return (multiprocessing.cpu_count() * 2) + 1
+
+
 class ServingCommand(BaseCommand):
     name = "serving"
     module_list = []