Resolve mypy errors.

Author: Daniel Goshev

.github/workflows/django.yml

@@ -46,12 +46,8 @@ jobs:
           key: python-${{ hashFiles('requirements/local.txt') }}-${{ hashFiles('requirements/base.txt') }}
       - name: Install dependencies
         run: pip install -r requirements/local.txt
-      - name: Run isort
-        uses: isort/isort-action@master
-      - name: Run black
-        uses: psf/black@stable
-      - name: Run flake8
-        run: flake8
+      - name: Run ruff
+        uses: chartboost/ruff-action@v1
       - name: Type check
         run: mypy --config mypy.ini styleguide_example/
       - name: Run tests

styleguide_example/common/models.py

@@ -1,5 +1,5 @@
 from django.db import models
-from django.db.models.query import F, Q
+from django.db.models import F, Q
 from django.utils import timezone
 
 
@@ -29,7 +29,13 @@ class RandomModel(BaseModel):
     start_date = models.DateField()
     end_date = models.DateField()
 
-    simple_objects = models.ManyToManyField(SimpleModel, blank=True, related_name="random_objects")
+    simple_objects = models.ManyToManyField(
+        SimpleModel, blank=True, related_name="random_objects"
+    )
 
     class Meta:
-        constraints = [models.CheckConstraint(name="start_date_before_end_date", check=Q(start_date__lt=F("end_date")))]
+        constraints = [
+            models.CheckConstraint(
+                name="start_date_before_end_date", check=Q(start_date__lt=F("end_date"))
+            )
+        ]

styleguide_example/testing_examples/models.py

@@ -1,7 +1,7 @@
 from uuid import uuid4
 
 from django.db import models
-from django.db.models.query import F, Q
+from django.db.models import F, Q
 
 
 class School(models.Model):
@@ -15,7 +15,9 @@ def __str__(self):
 class Student(models.Model):
     email = models.EmailField(max_length=255)
     identifier = models.UUIDField(default=uuid4)
-    school = models.ForeignKey(School, related_name="students", on_delete=models.CASCADE)
+    school = models.ForeignKey(
+        School, related_name="students", on_delete=models.CASCADE
+    )
 
     class Meta:
         unique_together = (
@@ -30,14 +32,19 @@ def __str__(self):
 class SchoolCourse(models.Model):
     name = models.CharField(max_length=255)
     slug = models.SlugField(max_length=255)
-    school = models.ForeignKey(School, related_name="school_courses", on_delete=models.CASCADE)
+    school = models.ForeignKey(
+        School, related_name="school_courses", on_delete=models.CASCADE
+    )
 
     start_date = models.DateField()
     end_date = models.DateField()
 
     class Meta:
         constraints = [
-            models.CheckConstraint(name="school_course_start_before_end", check=Q(start_date__lt=F("end_date")))
+            models.CheckConstraint(
+                name="school_course_start_before_end",
+                check=Q(start_date__lt=F("end_date")),
+            )
         ]
 
         unique_together = (
@@ -54,8 +61,12 @@ def __str__(self):
 
 
 class Roster(models.Model):
-    student = models.ForeignKey(Student, related_name="rosters", on_delete=models.CASCADE)
-    school_course = models.ForeignKey(SchoolCourse, related_name="rosters", on_delete=models.CASCADE)
+    student = models.ForeignKey(
+        Student, related_name="rosters", on_delete=models.CASCADE
+    )
+    school_course = models.ForeignKey(
+        SchoolCourse, related_name="rosters", on_delete=models.CASCADE
+    )
 
     start_date = models.DateField()
     end_date = models.DateField()
@@ -64,4 +75,8 @@ class Roster(models.Model):
     deactivated_at = models.DateField(null=True, blank=True)
 
     class Meta:
-        constraints = [models.CheckConstraint(name="roster_start_before_end", check=Q(start_date__lt=F("end_date")))]
+        constraints = [
+            models.CheckConstraint(
+                name="roster_start_before_end", check=Q(start_date__lt=F("end_date"))
+            )
+        ]

styleguide_example/testing_examples/selectors/schools.py

@@ -2,7 +2,7 @@
 from typing import Optional
 
 from django.core.exceptions import ValidationError
-from django.db.models.query import Q, QuerySet
+from django.db.models import Q, QuerySet
 
 from styleguide_example.testing_examples.models import School, SchoolCourse
 
@@ -12,26 +12,39 @@
 
 
 def school_list_school_courses(
-    *, school: School, start_date: Optional[date] = None, end_date: Optional[date] = None
+    *,
+    school: School,
+    start_date: Optional[date] = None,
+    end_date: Optional[date] = None,
 ) -> QuerySet[SchoolCourse]:
     if start_date is None and end_date:
         raise ValidationError(SCHOOL_LIST_SCHOOL_COURSES_PROVIDE_START_DATE_MSG)
 
     school_courses = school.school_courses.order_by("start_date")
 
     if start_date and end_date:
-        started_courses_Q = Q(start_date__lte=start_date, end_date__gte=start_date, end_date__lte=end_date)
+        started_courses_Q = Q(
+            start_date__lte=start_date, end_date__gte=start_date, end_date__lte=end_date
+        )
         courses_in_period_q = Q(start_date__gte=start_date, end_date__lte=end_date)
-        courses_wrapping_period_q = Q(start_date__lte=start_date, end_date__gte=end_date)
-        future_course_q = Q(start_date__gte=start_date, start_date__lte=end_date, end_date__gte=end_date)
+        courses_wrapping_period_q = Q(
+            start_date__lte=start_date, end_date__gte=end_date
+        )
+        future_course_q = Q(
+            start_date__gte=start_date, start_date__lte=end_date, end_date__gte=end_date
+        )
 
         return school_courses.filter(
-            started_courses_Q | courses_in_period_q | courses_wrapping_period_q | future_course_q
+            started_courses_Q
+            | courses_in_period_q
+            | courses_wrapping_period_q
+            | future_course_q
         )
 
     if start_date and end_date is None:
         return school_courses.filter(
-            Q(start_date__gte=start_date) | Q(start_date__lte=start_date, end_date__gte=start_date)
+            Q(start_date__gte=start_date)
+            | Q(start_date__lte=start_date, end_date__gte=start_date)
         )
 
     return school_courses