几天前我已经提出了一个关于这个的问题。我想这个问题没有引起注意，但是这种行为真的很奇怪，所以我试图将其简化为更简单的元素并再次询问。
请看这个回溯：
Traceback (most recent call last):
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 114, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 99, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/views/generic/base.py", line 69, in view
return self.dispatch(request, *args, **kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 29, in _wrapper
return bound_func(*args, **kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 99, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 25, in bound_func
return func(self, *args2, **kwargs2)
File "/home/m2user/webapps/enea/src/django-geojson/djgeojson/views.py", line 51, in dispatch
return super(GeoJSONLayerView, self).dispatch(*args, **kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/views/generic/base.py", line 87, in dispatch
return handler(request, *args, **kwargs)
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/views/generic/list.py", line 153, in get
return self.render_to_response(context)
File "/home/m2user/webapps/enea/src/django-geojson/djgeojson/views.py", line 41, in render_to_response
**options)
File "/home/m2user/webapps/enea/src/django-geojson/djgeojson/serializers.py", line 335, in serialize
self.serialize_object_list(queryset)
File "/home/m2user/webapps/enea/src/django-geojson/djgeojson/serializers.py", line 277, in serialize_queryset
self.start_object(obj)
File "/home/m2user/webapps/enea/src/django-geojson/djgeojson/serializers.py", line 177, in handle_field
if value is not None:
File "/home/m2user/webapps/enea/src/django-geojson/djgeojson/serializers.py", line 159, in _handle_geom
#logger.warn('%s != '%(self.srid, geometry.srid))
File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/contrib/gis/geos/geometry.py", line 510, in transform
raise GEOSException("Calling transform() with no SRID set is not supported")
第 159 行如何产生这样的错误？是评论！
到目前为止的尝试：.pyc在查询生成此错误的视图之前，我已经删除了所有文件并重新启动了 gunicorn。在源代码（django-geojson lib）中没有其他transform()函数调用（我都评论了它们）。
有任何想法吗？
更新： 我能够通过卸载然后重新安装所有库（作为 ubuntu 包）、python 解释器、所有代码、重新生成数据库（包括重新安装 postgis）然后完全重新启动 nginx 来解决我的问题（因此是gunicorn）。但是，没有更新任何库，所以我仍然不明白到底发生了什么。