fixes from review comments

reports/error_details.py

@@ -32,11 +32,9 @@ start = datetime.datetime(year=yesterday.year, month=yesterday.month, day=yester
 end = start + datetime.timedelta(hours=length-1, minutes=59, seconds=59)
 
 instance_map = {}  # { uuid : [request_id, request_id, ...] }
-metadata = {'raw_text': True, 'instances': instance_map}
+metadata = {'format': 'json', 'instances': instance_map}
 report = [metadata]
 
-#report.append("Generating report for %s to %s" % (start, end))
-
 dstart = dt.dt_to_decimal(start)
 dend = dt.dt_to_decimal(end)
 
@@ -73,11 +71,11 @@ for uuid_dict in updates:
     for req_dict in reqs:
         req = req_dict['request_id']
 
-        raws = list(models.RawData.objects.filter(request_id=req)\
-                                     .exclude(event='compute.instance.exists')\
+        raws = list(models.RawData.objects.filter(request_id=req)
+                    .exclude(event='compute.instance.exists')
                     .values("id", "when", "routing_key", "old_state",
                             "state", "tenant", "event", "image_type",
-                                             "deployment")\
+                            "deployment")
                     .order_by('when'))
 
         _start = None

reports/nova_usage_audit.py

@@ -22,9 +22,9 @@ import argparse
 import datetime
 import json
 import sys
-from os import environ
+import os
 
-sys.path.append(environ.get('STACKTACH_INSTALL_DIR', '/stacktach'))
+sys.path.append(os.environ.get('STACKTACH_INSTALL_DIR', '/stacktach'))
 
 from stacktach import datetime_to_decimal as dt
 from stacktach import models

reports/pretty.py

@@ -3,11 +3,10 @@ import datetime
 import json
 import sys
 import time
-from os import environ
-
+import os
 import prettytable
 
-sys.path.append(environ.get('STACKTACH_INSTALL_DIR', '/stacktach'))
+sys.path.append(os.environ.get('STACKTACH_INSTALL_DIR', '/stacktach'))
 
 from stacktach import datetime_to_decimal as dt
 from stacktach import image_type