from pyrogram import Client, enums

api_id = input('Enter Your API ID: \n')
api_hash = input('Enter Your API HASH : \n')

with Client('my_account', api_id=api_id, api_hash=api_hash, hide_password=True) as bot_:
    first_name = (bot_.get_me()).first_name
    string_session_ = f'<b><u>String Session For {first_name}</b></u> \n<code>{bot_.export_session_string()}</code>'
    bot_.send_message('me', string_session_, parse_mode=enums.ParseMode.HTML, disable_web_page_preview=True)
    print(f'String Has Been Sent To Your Saved Message : {first_name}')