Django exception handling - catching ghost error from server-side - django

Question

I have a Django view that is responsible for providing raw data for graph rendering on server-side. When I run the app locally (I have Windows 10 on my machine), everything works fine. But when I run the app from the remote server (it's Ubuntu), I get an 500-error. This type of errors (when identical code is ok locally, but fails remotely), currently constitutes a serious issue for me in that on every such occasion it leads to very time-consuming - and seemingly unprofessional - process to identify and fix them. And my question is, what is the magic exception handling code snippet which would help me through the detailed exception message to client-side console.
To be more specific, consider the following (I deliberately provide the code as is):
Django view:
def graph_vendors_black_white(request):
try:
legal_entity_own_qs = get_sale_points(request.user.id)
list = []
data = [x.blacknwhite_agreement_count(True) for x in legal_entity_own_qs]
list.append({'name':u'В белую', 'data':data});
data = [x.blacknwhite_agreement_count(False) for x in legal_entity_own_qs]
list.append({'name':u'В чёрную', 'data':data});
data = [x.blacknwhite_agreement_count(None) for x in legal_entity_own_qs]
list.append({'name':u'Не выбрана опция', 'data':data});
legal_entity_own_list = [unicode(x.short_identifier_rus) for x in legal_entity_own_qs]
json_response = JsonResponse({'time_series':json.dumps(list, ensure_ascii=False).encode('utf8'),'categories':json.dumps(legal_entity_own_list, ensure_ascii=False).encode('utf8')})
return json_response
except:
user_msg, tech_msg = default_error_msg()
return JsonResponse(user_msg + '\n ' + tech_msg, status = 500, safe = False)
def default_error_msg():
user_msg = u'Что-то пошло не так'
exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
try:
console_msg = exc_obj[1]
except:
console_msg = str(exc_obj.message)
tech_msg = ('File - ' + fname + ' on line ' + str(exc_tb.tb_lineno) + '. \n' + \
'Error message - ' + console_msg + '\n' + \
'Exception type - ' + str(type(exc_obj)))
return user_msg, tech_msg
JS:
$.get('/graph_vendors_black_white/', function (response)
{
// ... some code
}).fail(function(json_result) {
$('#black_white_container').html(json_result.responseJSON)
});
When I run this locally, it's perfectly ok. From remote server, it throws 500 error and most surprisingly json_result does not contain error message. Whereas if I put something like a = 1/0, I get the error message in the container instead of graph.
To sum up, the question is, what is the generic exception handling code snippet which would transmit the detailed error message to the fail-function response parameter NO MATTER WHAT THE ERROR IS on the server-side