style: modified models.py file formatting

widget_group_17/homepage/models.py

 from django.db import models
 
 class Department(models.Model):
-    dept_name = models.CharField(max_length=50,null=True)
-    home_unit = models.CharField(max_length=50,null=True)
+    dept_name = models.CharField(max_length=50, null=True)
+    home_unit = models.CharField(max_length=50, null=True)
 
     def __str__(self):
         return self.dept_name
@@ -11,8 +11,8 @@ class WidgetUser(models.Model):
     first_name = models.CharField(max_length=50)
     middle_name = models.CharField(max_length=50)
     last_name = models.CharField(max_length=50)
-    id_num = models.IntegerField(max_length=7,null=True)
-    email = models.EmailField(max_length=50,null=True)
+    id_num = models.IntegerField(max_length=7, null=True)
+    email = models.EmailField(max_length=50, null=True)
     department = models.ForeignKey(Department,
                                    on_delete=models.CASCADE,
                                    null=True,