bot.py
def start(bot, update):
    """Send a message when the command /start is issued."""
    update.message.reply_text('''Hi! i'll text you the times iss passes over you \n
        /visible to get visible passes for and 
        /allpasses to get all passes today''')
Send a message when the command /start is issued.
Send a message when the command /start is issued.
Send a message when the command / start is issued .
def start(bot, update):
    update.message.reply_text('''Hi! i'll text you the times iss passes over you \n
        /visible to get visible passes for and 
        /allpasses to get all passes today''')
def start ( bot , update ) : update . message . reply_text ( '''Hi! i'll text you the times iss passes over you \n
        /visible to get visible passes for and 
        /allpasses to get all passes today''' )
Send a message when the command /start is issued.
Send a message when the command / start is issued .
"""Send a message when the command /start is issued."""
bot
update