README.md edited

.venv/lib/python3.10/site-packages/telegram/_utils/markup.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+#
+# A library that provides a Python interface to the Telegram Bot API
+# Copyright (C) 2015-2024
+# Leandro Toledo de Souza <devs@python-telegram-bot.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Lesser Public License for more details.
+#
+# You should have received a copy of the GNU Lesser Public License
+# along with this program.  If not, see [http://www.gnu.org/licenses/].
+"""This module contains a helper function for Telegram's ReplyMarkups
+
+.. versionchanged:: 20.0
+   Previously, the contents of this module were available through the (no longer existing)
+   class ``telegram.ReplyMarkup``.
+
+Warning:
+    Contents of this module are intended to be used internally by the library and *not* by the
+    user. Changes to this module are not considered breaking changes and may not be documented in
+    the changelog.
+"""
+from collections.abc import Sequence
+
+
+def check_keyboard_type(keyboard: object) -> bool:
+    """Checks if the keyboard provided is of the correct type - A sequence of sequences.
+    Implicitly tested in the init-tests of `{Inline, Reply}KeyboardMarkup`
+    """
+    # string and bytes may actually be used for ReplyKeyboardMarkup in which case each button
+    # would contain a single character. But that use case should be discouraged and we don't
+    # allow it here.
+    if not isinstance(keyboard, Sequence) or isinstance(keyboard, (str, bytes)):
+        return False
+
+    for row in keyboard:
+        if not isinstance(row, Sequence) or isinstance(row, (str, bytes)):
+            return False
+        for inner in row:
+            if isinstance(inner, Sequence) and not isinstance(inner, str):
+                return False
+    return True