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我正在为 Telegram Bot 编写代码。我想输入一系列图像作为输入。为此，我使用计数器变量count = 0来计算图像的数量。但是，在输入第二张图像时出现异常，依此类推。异常说我的变量被引用为局部变量，而我将其设为全局变量。可能是什么问题？ 

from telegram import (ReplyKeyboardMarkup, ReplyKeyboardRemove)
from telegram.ext import (Updater, CommandHandler, MessageHandler, Filters, RegexHandler,
                          ConversationHandler)
import requests
import logging
import matplotlib.pyplot as plt
from PIL import Image
from matplotlib import patches
from io import BytesIO




# Enable logging
logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                    level=logging.INFO)

logger = logging.getLogger(__name__)

GENDER, PHOTO, LOCATION, BIO = range(4)


face_api_url = 'https://example.com'


headers = { 'Ocp-Apim-Subscription-Key': 'TOKEN' }

params = {
    'userID': '74'
}


saveResult = ""
count = 0
emArray = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]

def start(bot, update):
    update.message.reply_text('Send me five photos and you will recieve your emotion')

    return PHOTO



def gender(bot, update):
    response = requests.post(face_api_url, params=params, headers=headers, json={"url": img_url})
    faces = response.json()
    image_file = BytesIO(requests.get(img_url).content)
    image = Image.open(image_file)
    for face in faces:
        fa = face["faceAttributes"]
        em = fa["emotion"]

        if (count < 4):
            for i in em:
                newTmp = em[str(i)]
                logger.info(count)
                emArray[em.keys().index(i)] += newTmp
            count += 1    
        elif (count>4):        
            saveResult += "sadness: " + str(emArray[0]/500) + "%\n"
            saveResult += "neutral: " + str(emArray[1]/500) + "%\n"
            saveResult += "contempt: " + str(emArray[2]/500) + "%\n"
            saveResult += "disgust: " + str(emArray[3]/500) + "%\n"
            saveResult += "anger: " + str(emArray[4]/500) + "%\n"
            saveResult += "surprise: " + str(emArray[5]/500) + "%\n"
            saveResult += "fear: " + str(emArray[6]/500) + "%\n"
            saveResult += "happiness: " + str(emArray[7]/500) + "%\n"        
            update.message.reply_text(saveResult)



def photo(bot, update):
    user = update.message.from_user
    photo_file = bot.get_file(update.message.photo[-1].file_id)
    global img_url
    img_url = str(photo_file.file_path)
    update.message.reply_text("Wait a little bit")
    gender(bot, update)
    #return GENDER


def skip_photo(bot, update):
    user = update.message.from_user
    logger.info("User %s did not send a photo.", user.first_name)
    update.message.reply_text('I bet you look great! Now, send me your location please, '
                              'or send /skip.')

    return LOCATION


def location(bot, update):
    user = update.message.from_user
    user_location = update.message.location
    logger.info("Location of %s: %f / %f", user.first_name, user_location.latitude,
                user_location.longitude)
    update.message.reply_text('Maybe I can visit you sometime! '
                              'At last, tell me something about yourself.')

    return BIO


def skip_location(bot, update):
    user = update.message.from_user
    logger.info("User %s did not send a location.", user.first_name)
    update.message.reply_text('You seem a bit paranoid! '
                              'At last, tell me something about yourself.')

    return BIO


def bio(bot, update):
    user = update.message.from_user
    logger.info("Bio of %s: %s", user.first_name, update.message.text)
    update.message.reply_text('Thank you! I hope we can talk again some day.')

    return ConversationHandler.END


def cancel(bot, update):
    user = update.message.from_user
    logger.info("User %s canceled the conversation.", user.first_name)
    update.message.reply_text('Bye! I hope we can talk again some day.',
                              reply_markup=ReplyKeyboardRemove())

    return ConversationHandler.END


def error(bot, update, error):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, error)


def main():
    # Create the EventHandler and pass it your bot's token.
    updater = Updater("TOKEN")
    # global count
    # global emArray
    # global saveResult
    # saveResult = ""
    # count = 0
    # emArray = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
    # Get the dispatcher to register handlers
    dp = updater.dispatcher

    # Add conversation handler with the states GENDER, PHOTO, LOCATION and BIO
    conv_handler = ConversationHandler(
        entry_points=[CommandHandler('start', start)],

        states={
            GENDER: [RegexHandler('^(Boy|Girl|Other)$', gender)],

            PHOTO: [MessageHandler(Filters.photo, photo),
                    CommandHandler('skip', skip_photo)],

            LOCATION: [MessageHandler(Filters.location, location),
                       CommandHandler('skip', skip_location)],

            BIO: [MessageHandler(Filters.text, bio)]
        },

        fallbacks=[CommandHandler('cancel', cancel)]
    )

    dp.add_handler(conv_handler)

    # log all errors
    dp.add_error_handler(error)

    # Start the Bot
    updater.start_polling()

    # Run the bot until you press Ctrl-C or the process receives SIGINT,
    # SIGTERM or SIGABRT. This should be used most of the time, since
    # start_polling() is non-blocking and will stop the bot gracefully.
    updater.idle()


if __name__ == '__main__':
    main()

这里抛出异常

if (count < 4):
    for i in em:
        newTmp = em[str(i)]
        logger.info(count)
        emArray[em.keys().index(i)] += newTmp
    count += 1
4

1 回答 1

3

你需要使用

global count

在分配给的每个功能中count

def gender(bot, update):
    global count
    ...

和

def main():
    global count
    ...

最好避免全局。只需count在 main 中创建一个局部变量并将其传入和传出性别等。

def gender(bot, update, count):
    ...
    return count
于 2018-03-20T07:50:14.207 回答