Scripts need to be fully automated. Scripts hate user input. This prevents script automation. We need to go back in time rather than continue typing.

telethon/client/auth.py

@@ -139,6 +139,7 @@ class AuthMethods:
         # enables the library to warn users trying to login to a different
         # account. See #1172.
         me = await self.get_me()
+
         if me is not None:
             # The warnings here are on a best-effort and may fail.
             if bot_token:
@@ -158,7 +159,10 @@ class AuthMethods:
                 )
 
             return self
-
+        else:
+            if self.force_session:
+                self.login_failed("falied")
+                return
         if not bot_token:
             # Turn the callable into a valid phone number (or bot token)
             while callable(phone):

telethon/client/telegrambaseclient.py

@@ -27,7 +27,6 @@ if typing.TYPE_CHECKING:
 
 _base_log = logging.getLogger(__base_name__)
 
-
 # In seconds, how long to wait before disconnecting a exported sender.
 _DISCONNECT_EXPORTED_AFTER = 60
 
@@ -260,7 +259,9 @@ class TelegramBaseClient(abc.ABC):
             base_logger: typing.Union[str, logging.Logger] = None,
             receive_updates: bool = True,
             catch_up: bool = False,
-            entity_cache_limit: int = 5000
+            entity_cache_limit: int = 5000,
+            force_session: bool = False,
+            login_failed=None
     ):
         if not api_id or not api_hash:
             raise ValueError(
@@ -325,6 +326,10 @@ class TelegramBaseClient(abc.ABC):
         self.api_id = int(api_id)
         self.api_hash = api_hash
 
+        self.force_session = force_session
+        if self.force_session:
+            self.login_failed=login_failed
+
         # Current proxy implementation requires `sock_connect`, and some
         # event loops lack this method. If the current loop is missing it,
         # bail out early and suggest an alternative.
@@ -458,7 +463,6 @@ class TelegramBaseClient(abc.ABC):
             auto_reconnect_callback=self._handle_auto_reconnect
         )
 
-
     # endregion
 
     # region Properties