Merge pull request #183 from ZeusWPI/fix/pylint

Fix pylint in haldis

.pylintrc

@@ -5,6 +5,8 @@
 # run arbitrary code.
 extension-pkg-whitelist=
 
+fail-under=9
+
 # Add files or directories to the blacklist. They should be base names, not
 # paths.
 ignore=CVS
@@ -28,7 +30,7 @@ limit-inference-results=100
 
 # List of plugins (as comma separated values of python modules names) to load,
 # usually to register additional checkers.
-load-plugins=
+load-plugins=pylint_flask_sqlalchemy,pylint_flask
 
 # Pickle collected data for later comparisons.
 persistent=yes
@@ -60,7 +62,7 @@ confidence=
 # --enable=similarities". If you want to run only the classes checker, but have
 # no Warning level messages displayed, use "--disable=all --enable=classes
 # --disable=W".
-disable=E0401,E0611,C0103,W0511,W0611
+disable=E0401,E0611,C0103,W0511,W0611,C0415
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option

app/add_admins.py

@@ -1,7 +1,7 @@
 """Script for adding users as admin to Haldis."""
+from models import User
 
 from app import db
-from models import User
 
 
 def add() -> None:

app/admin.py

@@ -3,7 +3,6 @@ from flask import Flask
 from flask_admin import Admin
 from flask_admin.contrib.sqla import ModelView
 from flask_sqlalchemy import SQLAlchemy
-
 from models import Order, OrderItem, OrderItemChoice, User
 
 
@@ -26,8 +25,10 @@ class OrderAdminModel(ModelBaseView):
     column_default_sort = ("starttime", True)
     column_list = ["starttime", "stoptime", "location_name", "location_id", "courier"]
     column_labels = {
-        "starttime": "Start Time", "stoptime": "Closing Time",
+        "starttime": "Start Time",
-        "location_id": "HLDS Location ID"}
+        "stoptime": "Closing Time",
+        "location_id": "HLDS Location ID",
+    }
     form_excluded_columns = ["items", "courier_id"]
     can_delete = False
 
@@ -36,13 +37,25 @@ class OrderItemAdminModel(ModelBaseView):
     # pylint: disable=too-few-public-methods
     column_default_sort = ("order_id", True)
     column_list = [
-        "order_id", "order.location_name", "user_name", "user", "dish_name", "dish_id", "comment", "price", "paid",
+        "order_id",
-        "hlds_data_version"
+        "order.location_name",
+        "user_name",
+        "user",
+        "dish_name",
+        "dish_id",
+        "comment",
+        "price",
+        "paid",
+        "hlds_data_version",
     ]
     column_labels = {
-        "order_id": "Order", "order.location_name": "Order's Location",
+        "order_id": "Order",
-        "user_name": "Anon. User", "user_id": "Registered User",
+        "order.location_name": "Order's Location",
-        "hlds_data_version": "HLDS Data Version", "dish_id": "HLDS Dish ID"}
+        "user_name": "Anon. User",
+        "user_id": "Registered User",
+        "hlds_data_version": "HLDS Data Version",
+        "dish_id": "HLDS Dish ID",
+    }
 
 
 def init_admin(app: Flask, database: SQLAlchemy) -> None:

app/app.py

@@ -3,10 +3,11 @@
 """Main Haldis script"""
 
 import logging
-from logging.handlers import TimedRotatingFileHandler
 import typing
 from datetime import datetime
+from logging.handlers import TimedRotatingFileHandler
 
+from admin import init_admin
 from flask import Flask, render_template
 from flask_bootstrap import Bootstrap, StaticCDN
 from flask_debugtoolbar import DebugToolbarExtension
@@ -14,10 +15,8 @@ from flask_login import LoginManager
 from flask_migrate import Migrate, MigrateCommand
 from flask_oauthlib.client import OAuth, OAuthException
 from flask_script import Manager, Server
-from markupsafe import Markup
-
-from admin import init_admin
 from login import init_login
+from markupsafe import Markup
 from models import db
 from models.anonymous_user import AnonymouseUser
 from utils import euro_string, price_range_string
@@ -69,7 +68,8 @@ def register_plugins(app: Flask) -> Manager:
 
     # Make cookies more secure
     app.config.update(
-        SESSION_COOKIE_HTTPONLY=True, SESSION_COOKIE_SAMESITE="Lax",
+        SESSION_COOKIE_HTTPONLY=True,
+        SESSION_COOKIE_SAMESITE="Lax",
     )
 
     if not app.debug:
@@ -95,11 +95,11 @@ def add_routes(application: Flask) -> None:
     # import views  # TODO convert to blueprint
     # import views.stats  # TODO convert to blueprint
 
-    from views.order import order_bp
-    from views.general import general_bp
-    from views.stats import stats_blueprint
-    from views.debug import debug_bp
     from login import auth_bp
+    from views.debug import debug_bp
+    from views.general import general_bp
+    from views.order import order_bp
+    from views.stats import stats_blueprint
     from zeus import oauth_bp
 
     application.register_blueprint(general_bp, url_prefix="/")

app/create_database.py

@@ -2,7 +2,7 @@
 
 import add_admins
 
-from app import db, app_manager
+from app import app_manager, db
 
 entry_sets = {
     "admins": add_admins.add,
@@ -27,7 +27,7 @@ def check_if_overwrite() -> bool:
 def add_all() -> None:
     "Add all possible entries in the entry_sets to the database"
     for entry_set, function in entry_sets.items():
-        print("Adding {}.".format(entry_set))
+        print(f"Adding {entry_set}.")
         function()
 
 
@@ -45,14 +45,14 @@ def add_to_current() -> None:
 
     def add_numbers() -> str:
         return "  ".join(
-            ["{}({}), ".format(loc, i) for i, loc in enumerate(available)]
+            [f"{loc}({i}), " for i, loc in enumerate(available)]
         ).rstrip(", ")
 
     while input("Do you still want to add something? (Y/n) ").lower() not in no:
         print(
             "What do you want to add? (Use numbers, or A for all, or C for cancel)   "
         )
-        answer = input("Available: {}  : ".format(add_numbers()))
+        answer = input(f"Available: {add_numbers()}  : ")
         if answer.lower() == "a":
             add_all()
             available = []
@@ -60,7 +60,7 @@ def add_to_current() -> None:
             pass
         elif answer.isnumeric() and answer in [str(x) for x in range(len(available))]:
             answer_index = int(answer)
-            print("Adding {}.".format(available[answer_index]))
+            print(f"Adding {available[answer_index]}.")
             entry_sets[str(available[answer_index])]()
             del available[answer_index]
         else:

app/fatmodels.py

@@ -1,10 +1,9 @@
 import typing
 
-from sqlalchemy.sql import desc, func
-
 from hlds.definitions import location_definitions
-from hlds.models import Location, Dish
+from hlds.models import Dish, Location
 from models import Order, OrderItem, User
+from sqlalchemy.sql import desc, func
 
 
 class FatModel:

app/forms.py

@@ -1,25 +1,16 @@
 "Script for everything form related in Haldis"
 from datetime import datetime, timedelta
-
 from typing import Optional
 
-from flask import session, request
+from flask import request, session
 from flask_login import current_user
 from flask_wtf import FlaskForm as Form
-from wtforms import (
-    DateTimeField,
-    SelectField,
-    SelectMultipleField,
-    StringField,
-    SubmitField,
-    FieldList,
-    validators,
-)
-
-from utils import euro_string, price_range_string
 from hlds.definitions import location_definitions
-from hlds.models import Location, Dish, Choice
+from hlds.models import Choice, Dish, Location
 from models import User
+from utils import euro_string, price_range_string
+from wtforms import (DateTimeField, FieldList, SelectField,
+                     SelectMultipleField, StringField, SubmitField, validators)
 
 
 class OrderForm(Form):

app/hlds/__init__.py

@@ -6,4 +6,4 @@ These are not imported in this module's init, to avoid opening the definition fi
 parser on them when testing other code in this module, or when testing the parser on other files.
 """
 
-from .models import Location, Choice, Option
+from .models import Choice, Location, Option

app/hlds/definitions.py

@@ -1,11 +1,11 @@
 # Import this class to load the standard HLDS definitions
 
+import subprocess
 from os import path
 from typing import List
-import subprocess
-from .parser import parse_all_directory
-from .models import Location
 
+from .models import Location
+from .parser import parse_all_directory
 
 __all__ = ["location_definitions", "location_definition_version"]
 

app/hlds/models.py

@@ -1,26 +1,28 @@
 #!/usr/bin/env python3
 # pylint: disable=too-few-public-methods
 
-from typing import Iterable, List, Tuple, Mapping, Any, Optional
+from typing import Any, Iterable, List, Mapping, Optional, Tuple
+
 from utils import euro_string, first
 
 
 def _format_tags(tags: Iterable[str]) -> str:
-    return " :: {}".format(" ".join(["{" + tag + "}" for tag in tags])) \
+    # pylint: disable=consider-using-f-string
-        if tags \
+    return " :: {}".format(" ".join(["{" + tag + "}"
-        else ""
+                                     for tag in tags])) if tags else ""
 
 
 def _format_price(price: int) -> str:
-    return " {}".format(euro_string(price)) if price else ""
+    return f" {euro_string(price)}" if price else ""
 
 
 def _format_type_and_choice(type_and_choice):
     type_, choice = type_and_choice
-    return "{} {}".format(type_, choice)
+    return f"{type_} {choice}"
 
 
 class Option:
+
     def __init__(self, id_, *, name, description, price, tags):
         self.id: str = id_
         self.name: str = name
@@ -29,15 +31,17 @@ class Option:
         self.tags: List[str] = tags
 
     def __str__(self):
+        # pylint: disable=consider-using-f-string
         return "{0.id}: {0.name}{1}{2}{3}".format(
             self,
-            " -- {}".format(self.description) if self.description else "",
+            f" -- {self.description}" if self.description else "",
             _format_tags(self.tags),
             _format_price(self.price),
         )
 
 
 class Choice:
+
     def __init__(self, id_, *, name, description, options):
         self.id: str = id_
         self.name: str = name
@@ -48,7 +52,7 @@ class Choice:
     def __str__(self):
         return "{0.id}: {0.name}{1}\n\t\t{2}".format(
             self,
-            " -- {}".format(self.description) if self.description else "",
+            f" -- {self.description}" if self.description else "",
             "\n\t\t".join(map(str, self.options)),
         )
 
@@ -57,6 +61,7 @@ class Choice:
 
 
 class Dish:
+
     def __init__(self, id_, *, name, description, price, tags, choices):
         self.id: str = id_
         self.name: str = name
@@ -70,7 +75,7 @@ class Dish:
     def __str__(self):
         return "dish {0.id}: {0.name}{1}{2}{3}\n\t{4}".format(
             self,
-            " -- {}".format(self.description) if self.description else "",
+            f" -- {self.description}" if self.description else "",
             _format_tags(self.tags),
             _format_price(self.price),
             "\n\t".join(map(_format_type_and_choice, self.choices)),
@@ -86,14 +91,20 @@ class Dish:
         return sum(
             f(option.price for option in choice.options)
             for (choice_type, choice) in self.choices
-            if choice_type == "single_choice"
+            if choice_type == "single_choice")
-        )
 
 
 class Location:
-    def __init__(
+
-        self, id_, *, name, dishes, osm=None, address=None, telephone=None, website=None
+    def __init__(self,
-    ):
+                 id_,
+                 *,
+                 name,
+                 dishes,
+                 osm=None,
+                 address=None,
+                 telephone=None,
+                 website=None):
         self.id: str = id_
         self.name: str = name
         self.osm: Optional[str] = osm
@@ -107,24 +118,18 @@ class Location:
         return first(filter(lambda d: d.id == dish_id, self.dishes))
 
     def __str__(self):
-        return (
+        return ("============================\n"
-            "============================\n"
                 "{0.id}: {0.name}"
                 "{1}\n"
                 "============================\n"
                 "\n"
-            "{2}"
+                "{2}").format(
-        ).format(
                     self,
-            "".join(
+                    "".join(f"\n\t{k} {v}" for k, v in (
-                "\n\t{} {}".format(k, v)
-                for k, v in (
                         ("osm", self.osm),
                         ("address", self.address),
                         ("telephone", self.telephone),
                         ("website", self.website),
-                )
+                    ) if v is not None),
-                if v is not None
-            ),
                     "\n".join(map(str, self.dishes)),
                 )

app/hlds/parser.py

@@ -1,16 +1,17 @@
 #!/usr/bin/env python3
 
-from glob import glob
-from os import path
 import itertools
 from copy import deepcopy
-from typing import Iterable, List, Union, Tuple
+from glob import glob
+from os import path
+from typing import Iterable, List, Tuple, Union
+
 from tatsu import parse as tatsu_parse
 from tatsu.ast import AST
 from tatsu.exceptions import SemanticError
-from .models import Location, Choice, Option, Dish
 from utils import first
 
+from .models import Choice, Dish, Location, Option
 
 # TODO Use proper way to get resources, see https://stackoverflow.com/a/10935674
 with open(path.join(path.dirname(__file__), "hlds.tatsu")) as fh:
@@ -58,14 +59,16 @@ class HldsSemanticActions:
                     option.price += dish.price
                 dish.price = 0
         dishes = list(dishes)
-        dishes.append(Dish(
+        dishes.append(
+            Dish(
                 "custom",
                 name="Vrije keuze",
                 description="Zet wat je wil in comment",
                 price=0,
                 tags=[],
                 choices=[],
-        ))
+            )
+        )
 
         attributes = {att["key"]: att["value"] for att in ast["attributes"]}
 
@@ -145,7 +148,7 @@ def parse(menu: str) -> List[Location]:
 
 
 def parse_file(filename: str) -> List[Location]:
-    with open(filename, "r") as file_handle:
+    with open(filename) as file_handle:
         return parse(file_handle.read())
 
 

app/login.py

@@ -1,9 +1,8 @@
 "Script for everything related to logging in and out"
 from flask import Blueprint, abort, redirect, session, url_for
 from flask_login import current_user, logout_user
-from werkzeug.wrappers import Response
-
 from models import User
+from werkzeug.wrappers import Response
 from zeus import zeus_login
 
 auth_bp = Blueprint("auth_bp", __name__)

app/migrations/env.py

@@ -1,10 +1,8 @@
 "Script that runs migrations online or offline"
-from __future__ import with_statement
 
 from logging.config import fileConfig
 
 from alembic import context
-
 # add your model's MetaData object here
 # for 'autogenerate' support
 # from myapp import mymodel

app/migrations/versions/9159a6fed021_initial_haldis_support.py

@@ -12,11 +12,11 @@ revision = "9159a6fed021"
 down_revision = "150252c1cdb1"
 
 from itertools import chain
-from alembic import op
-import sqlalchemy as sa
-from sqlalchemy.sql import table, column, text
 
+import sqlalchemy as sa
+from alembic import op
 from hlds.definitions import location_definitions
+from sqlalchemy.sql import column, table, text
 
 LOCATION_LEGACY_TO_HLDS = {
     2: "blauw_kotje",
@@ -50,43 +50,67 @@ LOCATION_LEGACY_TO_HLDS = {
 
 def upgrade():
     # First the simple actions
-    op.create_table("order_item_choice",
+    op.create_table(
+        "order_item_choice",
         sa.Column("id", sa.Integer, nullable=False),
         sa.Column("choice_id", sa.String(length=64), nullable=True),
         sa.Column("order_item_id", sa.Integer, nullable=False),
         sa.Column("kind", sa.String(length=1), nullable=False),
         sa.Column("name", sa.String(length=120), nullable=True),
         sa.Column("value", sa.String(length=120), nullable=True),
-        sa.ForeignKeyConstraint(["order_item_id"], ["order_item.id"], ),
+        sa.ForeignKeyConstraint(
-        sa.PrimaryKeyConstraint("id")
+            ["order_item_id"],
+            ["order_item.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.add_column(
+        "order_item",
+        sa.Column("hlds_data_version", sa.String(length=40), nullable=True),
+    )
+    op.alter_column(
+        "order", "courrier_id", new_column_name="courier_id", type_=sa.Integer
+    )
+    op.alter_column(
+        "order_item",
+        "extra",
+        new_column_name="comment",
+        existing_type=sa.String(254),
+        type_=sa.Text,
+    )
+    op.alter_column(
+        "order_item", "name", new_column_name="user_name", type_=sa.String(120)
     )
-    op.add_column("order_item", sa.Column("hlds_data_version", sa.String(length=40), nullable=True))
-    op.alter_column("order", "courrier_id", new_column_name="courier_id", type_=sa.Integer)
-    op.alter_column("order_item", "extra", new_column_name="comment",
-                    existing_type=sa.String(254), type_=sa.Text)
-    op.alter_column("order_item", "name", new_column_name="user_name", type_=sa.String(120))
 
     # ----------------------------------------------------------------------------------------------
     # Migrate historical product data to order items
 
     # First create the new columns we will populate
-    op.add_column("order_item", sa.Column("dish_id", sa.String(length=64), nullable=True))
+    op.add_column(
-    op.add_column("order_item", sa.Column("dish_name", sa.String(length=120), nullable=True))
+        "order_item", sa.Column("dish_id", sa.String(length=64), nullable=True)
+    )
+    op.add_column(
+        "order_item", sa.Column("dish_name", sa.String(length=120), nullable=True)
+    )
     op.add_column("order_item", sa.Column("price", sa.Integer(), nullable=True))
     # Brief, ad-hoc table constructs just for our UPDATE statement, see
     # https://alembic.sqlalchemy.org/en/latest/ops.html#alembic.operations.Operations.execute
-    order_item = table("order_item",
+    order_item = table(
+        "order_item",
         column("product_id", sa.Integer),
         column("dish_id", sa.String),
         column("dish_name", sa.String),
-        column("price", sa.Integer)
+        column("price", sa.Integer),
     )
     # Construct and execute queries
-    op.execute(text("""
+    op.execute(
+        text(
+            """
         UPDATE order_item
         SET dish_name = (SELECT product.name  FROM product WHERE product.id = order_item.product_id),
             price     = (SELECT product.price FROM product WHERE product.id = order_item.product_id)"""
-    ))
+        )
+    )
     # Historical product data migrated, drop obsolete column and table
     op.execute(text("ALTER TABLE order_item DROP FOREIGN KEY order_item_ibfk_3"))
     op.drop_column("order_item", "product_id")
@@ -96,16 +120,26 @@ def upgrade():
     # Migrate historical location data to orders
 
     op.execute(text("ALTER TABLE `order` DROP FOREIGN KEY order_ibfk_2"))
-    op.alter_column("order", "location_id", new_column_name="legacy_location_id",
+    op.alter_column(
-                    type_=sa.Integer, nullable=True)
+        "order",
-    op.add_column("order", sa.Column("location_id", sa.String(length=64), nullable=True))
+        "location_id",
-    op.add_column("order", sa.Column("location_name", sa.String(length=128), nullable=True))
+        new_column_name="legacy_location_id",
+        type_=sa.Integer,
+        nullable=True,
+    )
+    op.add_column(
+        "order", sa.Column("location_id", sa.String(length=64), nullable=True)
+    )
+    op.add_column(
+        "order", sa.Column("location_name", sa.String(length=128), nullable=True)
+    )
     # Brief, ad-hoc table constructs just for our UPDATE statement, see
     # https://alembic.sqlalchemy.org/en/latest/ops.html#alembic.operations.Operations.execute
-    order = table("order",
+    order = table(
+        "order",
         column("legacy_location_id", sa.Integer),
         column("location_id", sa.String),
-        column("location_name", sa.String)
+        column("location_name", sa.String),
     )
     # Construct and execute queries
     new_location_id = [
@@ -114,7 +148,8 @@ def upgrade():
         .values(location_id=new_id)
         for old_id, new_id in LOCATION_LEGACY_TO_HLDS.items()
     ]
-    location_name_from_location = text("""
+    location_name_from_location = text(
+        """
         UPDATE `order`
         SET location_name = (SELECT location.name FROM location
                              WHERE location.id = `order`.legacy_location_id)"""

app/models/order.py

@@ -1,10 +1,11 @@
 "Script for everything Order related in the database"
 import typing
-from datetime import datetime
 from collections import defaultdict
+from datetime import datetime
 
-from utils import first
 from hlds.definitions import location_definitions
+from utils import first
+
 from .database import db
 from .user import User
 
@@ -31,9 +32,9 @@ class Order(db.Model):
     def __repr__(self) -> str:
         # pylint: disable=R1705
         if self.location:
-            return "Order %d @ %s" % (self.id, self.location.name or "None")
+            return f"Order {self.id} @ {self.location.name or 'None'}"
         else:
-            return "Order %d" % (self.id)
+            return f"Order {self.id}"
 
     def update_from_hlds(self) -> None:
         """
@@ -46,19 +47,21 @@ class Order(db.Model):
         self.location_name = self.location.name
 
     def for_user(self, anon=None, user=None) -> typing.List:
+        "Get the items for a certain user"
         return list(
             filter(
                 (lambda i: i.user == user)
                 if user is not None
                 else (lambda i: i.user_name == anon),
-                self.items
+                self.items,
             )
         )
 
     def group_by_user(self) -> typing.List[typing.Tuple[str, typing.List]]:
         "Group items of an Order by user"
-        group: typing.Dict[str, typing.List] = dict()
+        group: typing.Dict[str, typing.List] = {}
 
+        # pylint: disable=E1133
         for item in self.items:
             if item.for_name not in group:
                 group[item.for_name] = []
@@ -70,12 +73,17 @@ class Order(db.Model):
 
         return list(sorted(group.items(), key=lambda t: (t[0] or "", t[1] or "")))
 
-    def group_by_dish(self) \
+    def group_by_dish(
-            -> typing.List[typing.Tuple[str, int, typing.List[typing.Tuple[str, typing.List]]]]:
+        self,
+    ) -> typing.List[
+        typing.Tuple[str, int, typing.List[typing.Tuple[str, typing.List]]]
+    ]:
         "Group items of an Order by dish"
-        group: typing.Dict[str, typing.Dict[str, typing.List]] = \
+        group: typing.Dict[str, typing.Dict[str, typing.List]] = defaultdict(
-            defaultdict(lambda: defaultdict(list))
+            lambda: defaultdict(list)
+        )
 
+        # pylint: disable=E1133
         for item in self.items:
             group[item.dish_name][item.comment].append(item)
 
@@ -87,12 +95,13 @@ class Order(db.Model):
                 sorted(
                     (comment, sorted(items, key=lambda x: (x.for_name or "")))
                     for comment, items in comment_group.items()
-                )
+                ),
             )
             for dish_name, comment_group in group.items()
         )
 
     def is_closed(self) -> bool:
+        "Return whether or not the order is closed"
         return self.stoptime and datetime.now() > self.stoptime
 
     def can_close(self, user_id: int) -> bool:

app/models/orderitem.py

@@ -1,8 +1,9 @@
 "Script for everything OrderItem related in the database"
 from datetime import datetime
 
-from utils import first
 from hlds.definitions import location_definitions
+from utils import first
+
 from .database import db
 from .order import Order
 from .user import User
@@ -21,20 +22,20 @@ class OrderItem(db.Model):
     comment = db.Column(db.Text(), nullable=True)
     hlds_data_version = db.Column(db.String(40), nullable=True)
 
-    choices = db.relationship("OrderItemChoice", backref="order_item", lazy="dynamic")
+    choices = db.relationship("OrderItemChoice",
+                              backref="order_item",
+                              lazy="dynamic")
 
     def __getattr__(self, name):
         if name == "dish":
-            location_id = (
+            location_id = (Order.query.filter(
-                Order.query.filter(Order.id == self.order_id).first().location_id
+                Order.id == self.order_id).first().location_id)
-            )
             location = first(
-                filter(lambda l: l.id == location_id, location_definitions)
+                filter(lambda l: l.id == location_id, location_definitions))
-            )
             if location:
-                return first(filter(lambda d: d.id == self.dish_id, location.dishes))
+                return first(
-            else:
+                    filter(lambda d: d.id == self.dish_id, location.dishes))
-                raise ValueError("No Location found with id: " + location_id)
+            raise ValueError(f"No Location found with id: {location_id}")
         raise AttributeError()
 
     @property
@@ -45,11 +46,7 @@ class OrderItem(db.Model):
         return self.user_name
 
     def __repr__(self) -> str:
-        return "Order %d: %s wants %s" % (
+        return "Order {self.order_id or 0}: {self.for_name} wants {self.dish_name or 'None'}"
-            self.order_id or 0,
-            self.for_name,
-            self.dish_name or "None",
-        )
 
     def update_from_hlds(self) -> None:
         """

app/models/orderitemchoice.py

@@ -1,3 +1,4 @@
+"Script for everything OrderItemChoice related in the database"
 from datetime import datetime
 
 from .database import db
@@ -5,6 +6,7 @@ from .orderitem import OrderItem
 
 
 class OrderItemChoice(db.Model):
+    "Class used for configuring the OrderItemChoice model in the database"
     id = db.Column(db.Integer, primary_key=True)
     choice_id = db.Column(db.String(64), nullable=True)
     order_item_id = db.Column(
@@ -16,7 +18,8 @@ class OrderItemChoice(db.Model):
 
     # pylint: disable=attribute-defined-outside-init
     def configure(self, order: OrderItem) -> None:
+        "Set the orderitem"
         self.order = order
 
     def __repr__(self) -> str:
-        return "{}: {}".format(self.name, self.value)
+        return f"{self.name}: {self.value}"

app/models/user.py

@@ -39,4 +39,4 @@ class User(db.Model):
         return str(self.id)
 
     def __repr__(self) -> str:
-        return "%s" % self.username
+        return f"{self.username}"

app/notification.py

@@ -16,7 +16,7 @@ def webhook_text(order: Order) -> typing.Optional[str]:
         return None
 
     if order.courier is not None:
-        # pylint: disable=C0301
+        # pylint: disable=C0301, C0209
         return "<!channel|@channel> {3} is going to {1}, order <{0}|here>! Deadline in {2} minutes!".format(
             url_for("order_bp.order_from_id", order_id=order.id, _external=True),
             order.location_name,
@@ -24,6 +24,7 @@ def webhook_text(order: Order) -> typing.Optional[str]:
             order.courier.username.title(),
         )
 
+    # pylint: disable=C0209
     return "<!channel|@channel> New order for {}. Deadline in {} minutes. <{}|Open here.>".format(
         order.location_name,
         remaining_minutes(order.stoptime),
@@ -43,7 +44,7 @@ class WebhookSenderThread(Thread):
     "Extension of the Thread class, which sends a webhook for the notification"
 
     def __init__(self, message: str, url: str) -> None:
-        super(WebhookSenderThread, self).__init__()
+        super().__init__()
         self.message = message
         self.url = url
 
@@ -64,4 +65,4 @@ def remaining_minutes(value) -> str:
     if delta.total_seconds() < 0:
         return "0"
     minutes = delta.total_seconds() // 60
-    return "%02d" % minutes
+    return f"{minutes:02}"

app/parse_hlds.py

@@ -1,9 +1,7 @@
 #!/usr/bin/env python3
 
-from tatsu.util import asjson
 from hlds.parser import parse_files
 
-
 USAGE = """{0} [filename]...
 Parse HLDS files, print as JSON
 

app/utils.py

@@ -9,9 +9,9 @@ def euro_string(value: int) -> str:
     """
     euro, cents = divmod(value, 100)
     if cents:
-        return "€ {}.{:02}".format(euro, cents)
+        return f"€ {euro}.{cents:02}"
     else:
-        return "€ {}".format(euro)
+        return f"€ {euro}"
 
 
 def price_range_string(price_range, include_upper=False):

app/views/debug.py

@@ -17,12 +17,12 @@ def list_routes() -> str:
     for rule in app.url_map.iter_rules():
         options = {}
         for arg in rule.arguments:
-            options[arg] = "[{0}]".format(arg)
+            options[arg] = f"[{arg}]"
         print(rule.endpoint)
         methods = ",".join(rule.methods)
         url = url_for(rule.endpoint, **options)
         line = urllib.parse.unquote(
-            "{:50s} {:20s} {}".format(rule.endpoint, methods, url)
+            f"{rule.endpoint:50s} {methods:20s} {url}"
         )
         output.append(line)
 

app/views/general.py

@@ -1,32 +1,26 @@
 "Script to generate the general views of Haldis"
+import json
 import os
 from datetime import datetime, timedelta
-
-import yaml
 from typing import Optional
 
-from flask import Flask, render_template, make_response
+import yaml
-from flask import request, jsonify
+from flask import Blueprint, Flask, abort
-from flask import Blueprint, abort
 from flask import current_app as app
-from flask import send_from_directory, url_for
+from flask import (jsonify, make_response, render_template, request,
+                   send_from_directory, url_for)
 from flask_login import login_required
-
-from utils import first
 from hlds.definitions import location_definitions
 from hlds.models import Location
 from models import Order
-
+from utils import first
 # import views
 from views.order import get_orders
 
-import json
-from flask import jsonify
-
 general_bp = Blueprint("general_bp", __name__)
 
 
-with open(os.path.join(os.path.dirname(__file__), "themes.yml"), "r") as _stream:
+with open(os.path.join(os.path.dirname(__file__), "themes.yml")) as _stream:
     _theme_data = yaml.safe_load(_stream)
     THEME_OPTIONS = _theme_data["options"]
     THEMES = _theme_data["themes"]
@@ -37,7 +31,7 @@ def home() -> str:
     "Generate the home view"
     prev_day = datetime.now() - timedelta(days=1)
     recently_closed = get_orders(
-        ((Order.stoptime > prev_day) & (Order.stoptime < datetime.now()))
+        (Order.stoptime > prev_day) & (Order.stoptime < datetime.now())
     )
     return render_template(
         "home.html", orders=get_orders(), recently_closed=recently_closed
@@ -60,7 +54,7 @@ def is_theme_active(theme, now):
 
         return start_datetime <= now <= end_datetime
 
-    raise Exception("Unknown theme type {}".format(theme_type))
+    raise Exception(f"Unknown theme type {theme_type}")
 
 
 def get_theme_css(theme, options):
@@ -71,13 +65,18 @@ def get_theme_css(theme, options):
 
     for option in theme.get("options", []):
         theme_name = theme["name"]
-        assert option in THEME_OPTIONS, f"Theme `{theme_name}` uses undefined option `{option}`"
+        assert (
+            option in THEME_OPTIONS
+        ), f"Theme `{theme_name}` uses undefined option `{option}`"
 
         chosen_value = options[option]
         possible_values = list(THEME_OPTIONS[option].keys())
 
-        value = chosen_value if chosen_value in possible_values \
+        value = (
+            chosen_value
+            if chosen_value in possible_values
             else THEME_OPTIONS[option]["_default"]
+        )
 
         filename += "_" + value
 
@@ -119,13 +118,15 @@ def current_theme_js():
     themes = get_active_themes()
 
     selected_theme_name = request.cookies.get("theme", None)
-    matching_theme = first((t for t in themes if t["file"] == selected_theme_name))
+    matching_theme = first(t for t in themes if t["file"] == selected_theme_name)
     cur_theme = matching_theme or themes[-1]
 
-    response = make_response(rf'''
+    response = make_response(
+        rf"""
 var currentTheme        = {json.dumps(cur_theme['file'])};
 var currentThemeOptions = {json.dumps(cur_theme.get('options', []))};
-''')
+"""
+    )
     response.headers["Content-Type"] = "text/javascript"
 
     # Theme name that is not valid at this moment: delete cookie
@@ -166,7 +167,8 @@ def location_dish(location_id, dish_id) -> str:
     dish = loc.dish_by_id(dish_id)
     if dish is None:
         abort(404)
-    return jsonify([
+    return jsonify(
+        [
             {
                 "type": c[0],
                 "id": c[1].id,
@@ -184,7 +186,8 @@ def location_dish(location_id, dish_id) -> str:
                 ],
             }
             for c in dish.choices
-    ])
+        ]
+    )
 
 
 @general_bp.route("/about/")
@@ -204,7 +207,7 @@ def profile() -> str:
 def favicon() -> str:
     "Generate the favicon"
     # pylint: disable=R1705
-    if not get_orders((Order.stoptime > datetime.now())):
+    if not get_orders(Order.stoptime > datetime.now()):
         return send_from_directory(
             os.path.join(app.root_path, "static"),
             "favicon.ico",

app/views/order.py

@@ -3,27 +3,16 @@ import random
 import typing
 from datetime import datetime
 
-from werkzeug.wrappers import Response
-
 # from flask import current_app as app
-from flask import (
+from flask import (Blueprint, abort, flash, redirect, render_template, request,
-    Blueprint,
+                   session, url_for, wrappers)
-    abort,
-    flash,
-    redirect,
-    render_template,
-    request,
-    session,
-    url_for,
-    wrappers,
-)
 from flask_login import current_user, login_required
-
 from forms import AnonOrderItemForm, OrderForm, OrderItemForm
+from hlds.definitions import location_definition_version, location_definitions
 from models import Order, OrderItem, User, db
-from hlds.definitions import location_definitions, location_definition_version
 from notification import post_order_to_webhook
 from utils import ignore_none
+from werkzeug.wrappers import Response
 
 order_bp = Blueprint("order_bp", "order")
 
@@ -72,8 +61,8 @@ def order_from_id(order_id: int, form: OrderForm = None, dish_id=None) -> str:
             form.populate(order.location)
     if order.is_closed():
         form = None
-    total_price = sum([o.price for o in order.items])
+    total_price = sum(o.price for o in order.items)
-    debts = sum([o.price for o in order.items if not o.paid])
+    debts = sum(o.price for o in order.items if not o.paid)
 
     dish = order.location.dish_by_id(dish_id) if order.location else None
 
@@ -96,7 +85,7 @@ def items_shop_view(order_id: int) -> str:
     if current_user.is_anonymous() and not order.public:
         flash("Please login to see this order.", "info")
         abort(401)
-    total_price = sum([o.price for o in order.items])
+    total_price = sum(o.price for o in order.items)
     return render_template("order_items.html", order=order, total_price=total_price)
 
 
@@ -138,7 +127,9 @@ def order_item_create(order_id: int) -> typing.Any:
         abort(404)
     form = AnonOrderItemForm() if current_user.is_anonymous() else OrderItemForm()
 
-    dish_id = request.form["dish_id"] if form.is_submitted() else request.args.get("dish")
+    dish_id = (
+        request.form["dish_id"] if form.is_submitted() else request.args.get("dish")
+    )
     if dish_id and not location.dish_by_id(dish_id):
         abort(404)
     if not form.is_submitted():
@@ -347,6 +338,6 @@ def get_orders(expression=None) -> typing.List[Order]:
     else:
         order_list = Order.query.filter(
             # pylint: disable=C0121
-            (expression & (Order.public == True))
+            expression & (Order.public == True)
         ).all()
     return order_list

app/views/stats.py

@@ -1,10 +1,9 @@
 "Script to generate the stats related views of Haldis"
+from fatmodels import FatLocation, FatOrder, FatOrderItem, FatUser
 from flask import Blueprint
 from flask import current_app as app
 from flask import render_template
 
-from fatmodels import FatLocation, FatOrder, FatOrderItem, FatUser
-
 stats_blueprint = Blueprint("stats_blueprint", __name__)
 
 

app/zeus.py

@@ -1,12 +1,12 @@
 "Script containing everything specific to ZeusWPI"
 import typing
 
-from flask import Blueprint, current_app, flash, redirect, request, session, url_for
+from flask import (Blueprint, current_app, flash, redirect, request, session,
+                   url_for)
 from flask_login import login_user
 from flask_oauthlib.client import OAuth, OAuthException
-from werkzeug.wrappers import Response
-
 from models import User, db
+from werkzeug.wrappers import Response
 
 oauth_bp = Blueprint("oauth_bp", __name__)
 
@@ -14,8 +14,7 @@ oauth_bp = Blueprint("oauth_bp", __name__)
 def zeus_login():
     "Log in using ZeusWPI"
     return current_app.zeus.authorize(
-        callback=url_for("oauth_bp.authorized", _external=True)
+        callback=url_for("oauth_bp.authorized", _external=True))
-    )
 
 
 @oauth_bp.route("/login/zeus/authorized")
@@ -25,10 +24,8 @@ def authorized() -> typing.Any:
     "Check authorized status"
     resp = current_app.zeus.authorized_response()
     if resp is None:
-        return "Access denied: reason=%s error=%s" % (
+        # pylint: disable=C0301
-            request.args["error"],
+        return f"Access denied: reason={request.args['error']} error={request.args['error_description']}"
-            request.args["error_description"],
-        )
     if isinstance(resp, OAuthException):
         return f"Access denied: {resp.message}<br>{resp.data}"
 

pylint-requirement.txt

@@ -0,0 +1,2 @@
+pylint-flask
+pylint-flask-sqlalchemy