From a36d0815b4a1752195ca1fbce852a2366566ff96 Mon Sep 17 00:00:00 2001
From: Alexander Popov <iiiypuk@fastmail.fm>
Date: Sun, 22 Jan 2023 21:41:45 +0300
Subject: [PATCH] telegram inline button error

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+---
+title: "❌ Ошибка 400 при добавлении InlineKeyboardButton в Telegram"
+date: 2023-01-22T21:33:01+03:00
+draft: false
+tags: [tips, telegram, python]
+---
+
+## Ошибка 400
+
+```text
+Error code: 400.
+Description: Bad Request: can't parse inline keyboard button:
+Text buttons are unallowed in the inline keyboard
+```
+
+Имеем такой код
+
+```python
+keyboard = types.InlineKeyboardMarkup()
+types_buttons = (
+    types.InlineKeyboardButton('\U0001f44d'),
+    types.InlineKeyboardButton('\U0001f44e'),
+)
+
+for type_button in types_buttons:
+    keyboard.add(type_button)
+
+bot.send_message(message.chat.id, 'text', reply_markup=keyboard)
+```
+
+## Решение
+
+Инлайн кнопки должны иметь хотя бы одно опциональное поле:
+`callback_data`, `url`, `switch_inline_query` и т.д.  
+You must use exactly one of the optional fields
+(https://core.telegram.org/bots/api#inlinekeyboardbutton)
+
+Если нужны текстовые кнопки, необходимо использовать класс `ReplyKeyboardMarkup`.
+
+Thanks [GrAnd](https://ru.stackoverflow.com/a/1354497).