Add Version Check to Examples (#3036)

examples/README.md

@@ -1,4 +1,5 @@
 # Examples
+## ⚠️ The examples in this directory are subject to changes and may not work on the PTB version that you are using. You can find the examples compatible with a specific version at https://github.com/python-telegram-bot/python-telegram-bot/tree/v<X.Y>/examples
 
 In this folder are small examples to show what a bot written with `python-telegram-bot` looks like. Some bots focus on one specific aspect of the Telegram Bot API while others focus on one of the mechanics of this library. Except for the [`rawapibot.py`](#pure-api) example, they all use the high-level framework this library provides with the [`telegram.ext`](https://python-telegram-bot.readthedocs.io/en/latest/telegram.ext.html) submodule.
 
@@ -6,10 +7,10 @@ All examples are licensed under the [CC0 License](https://github.com/python-tele
 
 Do note that we ignore one pythonic convention. Best practice would dictate, in many handler callbacks function signatures, to replace the argument `context` with an underscore, since `context` is an unused local variable in those callbacks. However, since these are examples and not having a name for that argument confuses beginners, we decided to have it present.
 
-### [`echobot.py`](https://github.com/python-telegram-bot/python-telegram-bot/blob/master/examples/echobot.py) 
+### [`echobot.py`](https://github.com/python-telegram-bot/python-telegram-bot/blob/master/examples/echobot.py)
 This is probably the base for most of the bots made with `python-telegram-bot`. It simply replies to each text message with a message that contains the same text.
 
-### [`timerbot.py`](https://github.com/python-telegram-bot/python-telegram-bot/blob/master/examples/timerbot.py) 
+### [`timerbot.py`](https://github.com/python-telegram-bot/python-telegram-bot/blob/master/examples/timerbot.py)
 This bot uses the [`JobQueue`](https://python-telegram-bot.readthedocs.io/en/latest/telegram.ext.jobqueue.html) class to send timed messages. The user sets a timer by using `/set` command with a specific time, for example `/set 30`. The bot then sets up a job to send a message to that user after 30 seconds. The user can also cancel the timer by sending `/unset`. To learn more about the `JobQueue`, read [this wiki article](https://github.com/python-telegram-bot/python-telegram-bot/wiki/Extensions-%E2%80%93-JobQueue).
 
 ### [`conversationbot.py`](https://github.com/python-telegram-bot/python-telegram-bot/blob/master/examples/conversationbot.py)

examples/arbitrarycallbackdatabot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """This example showcases how PTBs "arbitrary callback data" feature can be used.
@@ -10,6 +10,19 @@ https://github.com/python-telegram-bot/python-telegram-bot/wiki/Arbitrary-callba
 import logging
 from typing import List, Tuple, cast
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
 from telegram.ext import (
     Application,

examples/chatmemberbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -14,6 +14,19 @@ bot.
 import logging
 from typing import Optional, Tuple
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import Chat, ChatMember, ChatMemberUpdated, Update
 from telegram.constants import ParseMode
 from telegram.ext import Application, ChatMemberHandler, CommandHandler, ContextTypes

examples/contexttypesbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -14,6 +14,19 @@ import logging
 from collections import defaultdict
 from typing import DefaultDict, Optional, Set
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
 from telegram.constants import ParseMode
 from telegram.ext import (

examples/conversationbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -16,6 +16,19 @@ bot.
 
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import ReplyKeyboardMarkup, ReplyKeyboardRemove, Update
 from telegram.ext import (
     Application,

examples/conversationbot2.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -17,6 +17,19 @@ bot.
 import logging
 from typing import Dict
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import ReplyKeyboardMarkup, ReplyKeyboardRemove, Update
 from telegram.ext import (
     Application,

examples/deeplinking.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """Bot that explains Telegram's "Deep Linking Parameters" functionality.
@@ -20,6 +20,19 @@ bot.
 
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update, helpers
 from telegram.constants import ParseMode
 from telegram.ext import Application, CallbackQueryHandler, CommandHandler, ContextTypes, filters

examples/echobot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -17,6 +17,19 @@ bot.
 
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import ForceReply, Update
 from telegram.ext import Application, CommandHandler, ContextTypes, MessageHandler, filters
 

examples/errorhandlerbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """This is a very simple example on how one could implement a custom error handler."""
@@ -8,6 +8,19 @@ import json
 import logging
 import traceback
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import Update
 from telegram.constants import ParseMode
 from telegram.ext import Application, CommandHandler, ContextTypes

examples/inlinebot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -16,6 +16,19 @@ import logging
 from html import escape
 from uuid import uuid4
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineQueryResultArticle, InputTextMessageContent, Update
 from telegram.constants import ParseMode
 from telegram.ext import Application, CommandHandler, ContextTypes, InlineQueryHandler

examples/inlinekeyboard.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -8,6 +8,19 @@ Basic example for a bot that uses inline keyboards. For an in-depth explanation,
 """
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
 from telegram.ext import Application, CallbackQueryHandler, CommandHandler, ContextTypes
 

examples/inlinekeyboard2.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """Simple inline keyboard bot with multiple CallbackQueryHandlers.
@@ -16,6 +16,19 @@ Press Ctrl-C on the command line to stop the bot.
 """
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
 from telegram.ext import (
     Application,

examples/nestedconversationbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -17,6 +17,19 @@ bot.
 import logging
 from typing import Any, Dict, Tuple
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
 from telegram.ext import (
     Application,

examples/passportbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -14,6 +14,19 @@ See https://github.com/python-telegram-bot/python-telegram-bot/wiki/Telegram-Pas
 import logging
 from pathlib import Path
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import Update
 from telegram.ext import Application, ContextTypes, MessageHandler, filters
 

examples/paymentbot.py

@@ -1,11 +1,24 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """Basic example for a bot that can receive payment from user."""
 
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import LabeledPrice, ShippingOption, Update
 from telegram.ext import (
     Application,

examples/persistentconversationbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -17,6 +17,19 @@ bot.
 import logging
 from typing import Dict
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import ReplyKeyboardMarkup, ReplyKeyboardRemove, Update
 from telegram.ext import (
     Application,

examples/pollbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -9,6 +9,19 @@ one the user sends the bot
 """
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import (
     KeyboardButton,
     KeyboardButtonPollType,

examples/rawapibot.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# pylint: disable=wrong-import-position
 """Simple Bot to reply to Telegram messages.
 
 This is built on the API wrapper, see echobot.py to see the same example built
@@ -9,6 +10,19 @@ import asyncio
 import logging
 from typing import NoReturn
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import Bot
 from telegram.error import Forbidden, NetworkError
 

examples/timerbot.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, wrong-import-position
 # This program is dedicated to the public domain under the CC0 license.
 
 """
@@ -20,6 +20,19 @@ bot.
 
 import logging
 
+from telegram import __version__ as TG_VER
+
+try:
+    from telegram import __version_info__
+except ImportError:
+    __version_info__ = (0, 0, 0, 0, 0)  # type: ignore[assignment]
+
+if __version_info__ < (20, 0, 0, "alpha", 1):
+    raise RuntimeError(
+        f"This example is not compatible with your current PTB version {TG_VER}. To view the "
+        f"{TG_VER} version of this example, "
+        f"visit https://github.com/python-telegram-bot/python-telegram-bot/tree/v{TG_VER}/examples"
+    )
 from telegram import Update
 from telegram.ext import Application, CommandHandler, ContextTypes