Fix deprecation warnings

cps/admin.py

@@ -33,7 +33,7 @@ from functools import wraps
 from urllib.parse import urlparse
 
 from flask import Blueprint, flash, redirect, url_for, abort, request, make_response, send_from_directory, g, Response
-from flask import Markup
+from markupsafe import Markup
 from flask_login import login_required, current_user, logout_user
 from flask_babel import gettext as _
 from flask_babel import get_locale, format_time, format_datetime, format_timedelta

cps/editbooks.py

@@ -25,16 +25,15 @@ from datetime import datetime
 import json
 from shutil import copyfile
 from uuid import uuid4
-from markupsafe import escape  # dependency of flask
+from markupsafe import escape, Markup  # dependency of flask
 from functools import wraps
-import re
 
 try:
     from lxml.html.clean import clean_html, Cleaner
 except ImportError:
     clean_html = None
 
-from flask import Blueprint, request, flash, redirect, url_for, abort, Markup, Response
+from flask import Blueprint, request, flash, redirect, url_for, abort, Response
 from flask_babel import gettext as _
 from flask_babel import lazy_gettext as N_
 from flask_babel import get_locale

cps/services/SyncToken.py

@@ -19,10 +19,9 @@
 
 import sys
 from base64 import b64decode, b64encode
-from jsonschema import validate, exceptions, __version__
-from datetime import datetime, timezone
+from jsonschema import validate, exceptions
+from datetime import datetime
 
-from urllib.parse import unquote
 
 from flask import json
 from .. import logger