Resolve circular import

src/application.py

@@ -8,7 +8,6 @@
 from io import BytesIO
 
 import jwt
-from cs50 import SQL
 from flask import (abort, Flask, flash, redirect, render_template, request,
                    send_from_directory, send_file, session)
 from flask_mail import Mail
@@ -18,6 +17,7 @@
 from werkzeug.security import check_password_hash, generate_password_hash
 
 from helpers import *  # noqa
+from db import db
 from middlewares import ProxyFix
 
 app = Flask(__name__)
@@ -56,14 +56,6 @@
 # Configure flask-session
 Session(app)
 
-# Configure cs50
-try:
-    db = SQL("sqlite:///database.db")
-except Exception as e:  # when testing
-    sys.stderr.write(str(e))
-    open("database_test.db", "w").close()
-    db = SQL("sqlite:///database_test.db")
-
 # Configure flask-mail
 mail = Mail(app)
 

src/db.py

@@ -0,0 +1,10 @@
+from cs50 import SQL
+import sys
+
+
+try:
+    db = SQL("sqlite:///database.db")
+except Exception as e:  # when testing
+    sys.stderr.write(str(e))
+    open("database_test.db", "w").close()
+    db = SQL("sqlite:///database_test.db")

src/views/admin.py

@@ -6,7 +6,7 @@
 from werkzeug.security import generate_password_hash
 
 from helpers import *  # noqa
-from application import db
+from db import db
 
 api = Blueprint("admin", __name__)
 

src/views/api.py

@@ -3,7 +3,7 @@
 import logging
 
 from helpers import *  # noqa
-from application import db
+from db import db
 
 api = Blueprint("api", __name__)
 

src/views/contest.py

@@ -9,7 +9,7 @@
 
 
 from helpers import *  # noqa
-from application import db
+from db import db
 
 api = Blueprint("contest", __name__)
 

src/views/problem.py

@@ -8,7 +8,7 @@
 
 
 from helpers import *  # noqa
-from application import db
+from db import db
 
 api = Blueprint("problem", __name__)