update flask version to 3.0

Pipfile

@@ -5,7 +5,7 @@ name = "pypi"
 
 [packages]
 "backports.zoneinfo" = {version="==0.2.1", markers="python_version < '3.9'", extras=["tzdata"]}
-flask = "==2.3.3"
+flask = "==3.0.0"
 flask-cors = "==4.0.0"
 flask-socketio = "==5.3.6"
 gevent = "==23.7.0"

setup.py

@@ -29,7 +29,7 @@
         version_string = f"{version_string}.{vext}"
 
 requirements = [
-    "flask>=2.3.3,<2.4",
+    "flask>=3.0.0,<3.1",
     "flask-cors>=4.0.0,<5.0",
     "flask-socketio>=5.3.6,<6.0",
     "markdown>=3.4.4,<4.0",

src/taipy/gui/gui.py

@@ -23,16 +23,14 @@
 import time
 import typing as t
 import warnings
-from importlib import util
+from importlib import metadata, util
 from types import FrameType, SimpleNamespace
 from urllib.parse import unquote, urlencode, urlparse
 
 import __main__
 import markdown as md_lib
 import tzlocal
-from flask import Blueprint, Flask
-from flask import __version__ as flask_version  # type: ignore
-from flask import g, jsonify, request, send_file, send_from_directory
+from flask import Blueprint, Flask, g, jsonify, request, send_file, send_from_directory
 from werkzeug.utils import secure_filename
 
 from taipy.logger._taipy_logger import _TaipyLogger
@@ -737,7 +735,7 @@ def _serve_status(self, template: pathlib.Path) -> t.Dict[str, t.Dict[str, str]]
         if self._get_config("extended_status", False):
             base_json.update(
                 {
-                    "flask_version": str(flask_version or ""),
+                    "flask_version": str(metadata.version("flask") or ""),
                     "backend_version": self.__get_version(),
                     "host": f'{self._get_config("host", "localhost")}:{self._get_config("port", "default")}',
                     "python_version": sys.version,

src/taipy/gui/server.py

@@ -95,7 +95,7 @@ def __init__(
 
         # set json encoder (for Taipy specific types)
         self._flask.json_provider_class = _TaipyJsonProvider
-        self._flask.json = self._flask.json_provider_class(self._flask)
+        self._flask.json = self._flask.json_provider_class(self._flask)  # type: ignore
 
         self.__path_mapping = path_mapping or {}
         self.__ssl_context = server_config.get("ssl_context", None)