convert all datetime.now() to datetime.now(UTC)

common/djangoapps/heartbeat/views.py

 import json
 from datetime import datetime
+from pytz import UTC
 from django.http import HttpResponse
 from xmodule.modulestore.django import modulestore
 from dogapi import dog_stats_api
 
+
 @dog_stats_api.timed('edxapp.heartbeat')
 def heartbeat(request):
     """
     Simple view that a loadbalancer can check to verify that the app is up
     """
     output = {
-        'date': datetime.now().isoformat(),
+        'date': datetime.now(UTC).isoformat(),
         'courses': [course.location.url() for course in modulestore().get_courses()],
     }
     return HttpResponse(json.dumps(output, indent=4))

common/djangoapps/student/models.py

@@ -69,18 +69,20 @@ class UserProfile(models.Model):
     location = models.CharField(blank=True, max_length=255, db_index=True)
 
     # Optional demographic data we started capturing from Fall 2012
-    this_year = datetime.now().year
+    this_year = datetime.now(UTC).year
     VALID_YEARS = range(this_year, this_year - 120, -1)
     year_of_birth = models.IntegerField(blank=True, null=True, db_index=True)
     GENDER_CHOICES = (('m', 'Male'), ('f', 'Female'), ('o', 'Other'))
-    gender = models.CharField(blank=True, null=True, max_length=6, db_index=True,
-                              choices=GENDER_CHOICES)
+    gender = models.CharField(
+        blank=True, null=True, max_length=6, db_index=True, choices=GENDER_CHOICES
+    )
 
     # [03/21/2013] removed these, but leaving comment since there'll still be
     # p_se and p_oth in the existing data in db.
     # ('p_se', 'Doctorate in science or engineering'),
     # ('p_oth', 'Doctorate in another field'),
-    LEVEL_OF_EDUCATION_CHOICES = (('p', 'Doctorate'),
+    LEVEL_OF_EDUCATION_CHOICES = (
+        ('p', 'Doctorate'),
         ('m', "Master's or professional degree"),
         ('b', "Bachelor's degree"),
         ('a', "Associate's degree"),
@@ -88,7 +90,8 @@ class UserProfile(models.Model):
         ('jhs', "Junior secondary/junior high/middle school"),
         ('el', "Elementary/primary school"),
         ('none', "None"),
-                                  ('other', "Other"))
+        ('other', "Other")
+    )
     level_of_education = models.CharField(
         blank=True, null=True, max_length=6, db_index=True,
         choices=LEVEL_OF_EDUCATION_CHOICES
@@ -318,7 +321,7 @@ ACCOMMODATION_CODES = (
     ('SRRECR', 'Separate Room and Recorder'),
     ('SRSEAN', 'Separate Room and Service Animal'),
     ('SRSGNR', 'Separate Room and Sign Language Interpreter'),
-                      )
+)
 
 ACCOMMODATION_CODE_DICT = {code: name for (code, name) in ACCOMMODATION_CODES}
 
@@ -572,7 +575,6 @@ class TestCenterRegistrationForm(ModelForm):
         return code
 
 
-
 def get_testcenter_registration(user, course_id, exam_series_code):
     try:
         tcu = TestCenterUser.objects.get(user=user)

common/djangoapps/student/views.py

@@ -1100,7 +1100,7 @@ def confirm_email_change(request, key):
         meta = up.get_meta()
         if 'old_emails' not in meta:
             meta['old_emails'] = []
-        meta['old_emails'].append([user.email, datetime.datetime.now().isoformat()])
+        meta['old_emails'].append([user.email, datetime.datetime.now(UTC).isoformat()])
         up.set_meta(meta)
         up.save()
         # Send it to the old email...
@@ -1198,7 +1198,7 @@ def accept_name_change_by_id(id):
     meta = up.get_meta()
     if 'old_names' not in meta:
         meta['old_names'] = []
-    meta['old_names'].append([up.name, pnc.rationale, datetime.datetime.now().isoformat()])
+    meta['old_names'].append([up.name, pnc.rationale, datetime.datetime.now(UTC).isoformat()])
     up.set_meta(meta)
 
     up.name = pnc.new_name

common/lib/capa/capa/tests/test_responsetypes.py

@@ -705,7 +705,7 @@ class CodeResponseTest(ResponseTest):
         # Now we queue the LCP
         cmap = CorrectMap()
         for i, answer_id in enumerate(answer_ids):
-            queuestate = CodeResponseTest.make_queuestate(i, datetime.now())
+            queuestate = CodeResponseTest.make_queuestate(i, datetime.now(UTC))
             cmap.update(CorrectMap(answer_id=answer_ids[i], queuestate=queuestate))
         self.problem.correct_map.update(cmap)
 
@@ -721,7 +721,7 @@ class CodeResponseTest(ResponseTest):
         old_cmap = CorrectMap()
         for i, answer_id in enumerate(answer_ids):
             queuekey = 1000 + i
-            queuestate = CodeResponseTest.make_queuestate(queuekey, datetime.now())
+            queuestate = CodeResponseTest.make_queuestate(queuekey, datetime.now(UTC))
             old_cmap.update(CorrectMap(answer_id=answer_ids[i], queuestate=queuestate))
 
         # Message format common to external graders

common/lib/xmodule/xmodule/open_ended_grading_classes/openendedchild.py

@@ -5,6 +5,7 @@ import re
 
 import open_ended_image_submission
 from xmodule.progress import Progress
+import capa.xqueue_interface as xqueue_interface
 from capa.util import *
 from .peer_grading_service import PeerGradingService, MockPeerGradingService
 import controller_query_service
@@ -334,12 +335,15 @@ class OpenEndedChild(object):
             log.exception("Could not create image and check it.")
 
         if image_ok:
-            image_key = image_data.name + datetime.now().strftime("%Y%m%d%H%M%S")
+            image_key = image_data.name + datetime.now(UTC).strftime(
+                xqueue_interface.dateformat
+            )
 
             try:
                 image_data.seek(0)
-                success, s3_public_url = open_ended_image_submission.upload_to_s3(image_data, image_key,
-                                                                                  self.s3_interface)
+                success, s3_public_url = open_ended_image_submission.upload_to_s3(
+                    image_data, image_key, self.s3_interface
+                )
             except:
                 log.exception("Could not upload image to S3.")
 

i18n/tests/test_extract.py

-import os, polib
+import os
+import polib
 from unittest import TestCase
 from nose.plugins.skip import SkipTest
 from datetime import datetime, timedelta
+from pytz import UTC
 
 import extract
 from config import CONFIGURATION
@@ -9,6 +11,7 @@ from config import CONFIGURATION
 # Make sure setup runs only once
 SETUP_HAS_RUN = False
 
+
 class TestExtract(TestCase):
     """
     Tests functionality of i18n/extract.py
@@ -25,14 +28,14 @@ class TestExtract(TestCase):
 
         # Subtract 1 second to help comparisons with file-modify time succeed,
         # since os.path.getmtime() is not millisecond-accurate
-        self.start_time = datetime.now() - timedelta(seconds=1)
+        self.start_time = datetime.now(UTC) - timedelta(seconds=1)
         super(TestExtract, self).setUp()
         if not SETUP_HAS_RUN:
             # Run extraction script. Warning, this takes 1 minute or more
             extract.main()
             SETUP_HAS_RUN = True
 
-    def get_files (self):
+    def get_files(self):
         """
         This is a generator.
         Returns the fully expanded filenames for all extracted files
@@ -71,9 +74,11 @@ class TestExtract(TestCase):
         for path in self.get_files():
             po = polib.pofile(path)
             header = po.header
-            self.assertEqual(header.find('edX translation file'), 0,
-                             msg='Missing header in %s:\n"%s"' % \
-                             (os.path.basename(path), header))
+            self.assertEqual(
+                header.find('edX translation file'),
+                0,
+                msg='Missing header in %s:\n"%s"' % (os.path.basename(path), header)
+            )
 
     def test_metadata(self):
         """Verify all metadata has been modified"""

i18n/tests/test_generate.py

-import os, string, random, re
+import os
+import string
+import random
+import re
 from polib import pofile
 from unittest import TestCase
 from datetime import datetime, timedelta
+from pytz import UTC
 
 import generate
 from config import CONFIGURATION
 
+
 class TestGenerate(TestCase):
     """
     Tests functionality of i18n/generate.py
@@ -15,7 +20,7 @@ class TestGenerate(TestCase):
     def setUp(self):
         # Subtract 1 second to help comparisons with file-modify time succeed,
         # since os.path.getmtime() is not millisecond-accurate
-        self.start_time = datetime.now() - timedelta(seconds=1)
+        self.start_time = datetime.now(UTC) - timedelta(seconds=1)
 
     def test_merge(self):
         """

lms/djangoapps/certificates/management/commands/ungenerated_certs.py

@@ -8,6 +8,7 @@ from xmodule.course_module import CourseDescriptor
 from xmodule.modulestore.django import modulestore
 from certificates.models import CertificateStatuses
 import datetime
+from pytz import UTC
 
 
 class Command(BaseCommand):
@@ -41,7 +42,6 @@ class Command(BaseCommand):
                     'whose entry in the certificate table matches STATUS. '
                     'STATUS can be generating, unavailable, deleted, error '
                     'or notpassing.'),
-
     )
 
     def handle(self, *args, **options):
@@ -83,20 +83,20 @@ class Command(BaseCommand):
             xq = XQueueCertInterface()
             total = enrolled_students.count()
             count = 0
-            start = datetime.datetime.now()
+            start = datetime.datetime.now(UTC)
             for student in enrolled_students:
                 count += 1
                 if count % STATUS_INTERVAL == 0:
                     # Print a status update with an approximation of
                     # how much time is left based on how long the last
                     # interval took
-                    diff = datetime.datetime.now() - start
+                    diff = datetime.datetime.now(UTC) - start
                     timeleft = diff * (total - count) / STATUS_INTERVAL
                     hours, remainder = divmod(timeleft.seconds, 3600)
                     minutes, seconds = divmod(remainder, 60)
                     print "{0}/{1} completed ~{2:02}:{3:02}m remaining".format(
                         count, total, hours, minutes)
-                    start = datetime.datetime.now()
+                    start = datetime.datetime.now(UTC)
 
                 if certificate_status_for_student(
                         student, course_id)['status'] in valid_statuses: