Added Bounded method for download custom emoji stickers

pyrogram/types/messages_and_media/sticker.py

@@ -17,7 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 from datetime import datetime
-from typing import List, Dict, Type
+from typing import List, Dict, Type,Callable
 
 import pyrogram
 from pyrogram import raw, utils
@@ -210,3 +210,79 @@ async def _parse(
             thumbs=types.Thumbnail._parse(client, sticker),
             client=client
         )
+
+
+    async def download(
+        self,
+        file_name: str = "",
+        in_memory: bool = False,
+        block: bool = True,
+        progress: Callable = None,
+        progress_args: tuple = ()
+    ) -> str:
+        """Bound method *download* of :obj:`~pyrogram.types.Sticker`.
+
+        Use as a shortcut for:
+
+        .. code-block:: python
+
+            await client.download_media(message)
+
+        Example:
+            .. code-block:: python
+
+                await message.download()
+
+        Parameters:
+            file_name (``str``, *optional*):
+                A custom *file_name* to be used instead of the one provided by Telegram.
+                By default, all files are downloaded in the *downloads* folder in your working directory.
+                You can also specify a path for downloading files in a custom location: paths that end with "/"
+                are considered directories. All non-existent folders will be created automatically.
+
+            in_memory (``bool``, *optional*):
+                Pass True to download the media in-memory.
+                A binary file-like object with its attribute ".name" set will be returned.
+                Defaults to False.
+
+            block (``bool``, *optional*):
+                Blocks the code execution until the file has been downloaded.
+                Defaults to True.
+
+            progress (``Callable``, *optional*):
+                Pass a callback function to view the file transmission progress.
+                The function must take *(current, total)* as positional arguments (look at Other Parameters below for a
+                detailed description) and will be called back each time a new file chunk has been successfully
+                transmitted.
+
+            progress_args (``tuple``, *optional*):
+                Extra custom arguments for the progress callback function.
+                You can pass anything you need to be available in the progress callback scope; for example, a Message
+                object or a Client instance in order to edit the message with the updated progress status.
+
+        Other Parameters:
+            current (``int``):
+                The amount of bytes transmitted so far.
+
+            total (``int``):
+                The total size of the file.
+
+            *args (``tuple``, *optional*):
+                Extra custom arguments as defined in the ``progress_args`` parameter.
+                You can either keep ``*args`` or add every single extra argument in your function signature.
+
+        Returns:
+            On success, the absolute path of the downloaded file as string is returned, None otherwise.
+
+        Raises:
+            RPCError: In case of a Telegram RPC error.
+            ``ValueError``: If the message doesn't contain any downloadable media
+        """
+        return await self._client.download_media(
+            message=self.file_id,
+            file_name=file_name,
+            in_memory=in_memory,
+            block=block,
+            progress=progress,
+            progress_args=progress_args,
+        )