python with statement one liner returns invalid syntax

April 25, 2022

I have a snippet below.. Basically, my goal is to execute my whole python snippet with just one line… But it always returns an error when it comes to the with statement

$ python
>>> import os
>>> phone = os.environ['PHONE'];
>>> api_id = os.environ['API_ID'];
>>> api_hash = os.environ['API_HASH']
>>> from telethon.sync import TelegramClient
>>> from telethon import functions, types; with TelegramClient(phone, api_id, api_hash) as client: print('test')

With the code above it will return something like below:

>>> from telethon.sync import TelegramClient;  with TelegramClient(phone, api_id, api_hash) as client: print('$2')
  File "<stdin>", line 1
    from telethon.sync import TelegramClient;  with TelegramClient(phone, api_id, api_hash) as client: print('$2')
                                               ^^^^
SyntaxError: invalid syntax

UPDATE:
If you guys want to know the whole snippet used with bash level. Feel free to check snippet below:

docker exec ${item} python manage.py shell -c "import os; \
from telethon.sync import TelegramClient; \
from telethon import functions, types; \
phone = os.environ['PHONE']; \
api_id = os.environ['API_ID']; \
api_hash = os.environ['API_HASH']; \
with TelegramClient(phone, api_id, api_hash) as client: \
    result = client(functions.channels.JoinChannelRequest(channel='$2'));\
    result2 = client(functions.channels.JoinChannelRequest(channel='$3'));\
"; 

Above is the whole code including the one used in bash script if you are interested to specifically

>Solution :

Only simple statements may be joined with a ; on a single line:

Several simple statements may occur on a single line separated by semicolons.

A with statement is a compound statement, and as such is not eligible to appear on a line after a ;.

Based on your update, you may just need to remove the line continuations and the semicolons. You already have multiple physical lines; there’s no reason to try to create one logical line.

docker exec ${item} python manage.py shell -c "import os
from telethon.sync import TelegramClient
from telethon import functions, types
phone = os.environ['PHONE']
api_id = os.environ['API_ID']
api_hash = os.environ['API_HASH']
with TelegramClient(phone, api_id, api_hash) as client:
    result = client(functions.channels.JoinChannelRequest(channel='$2'))
    result2 = client(functions.channels.JoinChannelRequest(channel='$3'))
";

You probably should not try to embed the shell parameters in the script, but rather pass them as arguments. Not knowing what manage.py is, you might try

docker exec ${item} python manage.py shell -c "import os
import sys
from telethon.sync import TelegramClient
from telethon import functions, types
phone = os.environ['PHONE']
api_id = os.environ['API_ID']
api_hash = os.environ['API_HASH']
with TelegramClient(phone, api_id, api_hash) as client:
    result = client(functions.channels.JoinChannelRequest(channel=sys.argv[1]))
    result2 = client(functions.channels.JoinChannelRequest(channel=sys.argv[2]))
" "$2" "$3"