add tag import script

studyguides/apps/courses/management/commands/upload_tags.py

@@ -0,0 +1,23 @@
+from django.core.management.base import BaseCommand, CommandError
+import csv
+from studyguides.apps.courses.models import Tag
+
+class Command(BaseCommand):
+    help = 'upload tags from csv'
+
+    def add_arguments(self, parser):
+        parser.add_argument('filename')
+    
+    def handle(self,*args,**kwargs):
+        try:
+            with open(kwargs['filename']) as tagfile:
+                tag_reader = csv.reader(tagfile, delimiter=',')
+                for row in tag_reader:
+                    name = row[0].strip()
+                    url = row[1].strip()
+                    tag = Tag.objects.get_or_create(name=name,url=url)[0]
+                    tag.save()
+        except OSError as ex:
+            raise CommandError(str(ex)) from ex
+        
+