TypeError为关键字参数队列获取了多个值

Question

我被困在这个错误，我没有设法修复。我已经找到了相关的案例，但我很难将其应用到我自己的问题上。 有人能帮我理解为什么会发生这种类型错误和/或帮我找到解决方案吗？（请作为初学者回复我）

我在raspberry pi和pika 1.1.0中使用python

这是我的回溯：

  File "amqp.py", line 33, in <module>
    no_ack=True)
TypeError: basic_consume() got multiple values for keyword argument 'queue

我认为这就是相关代码：

def callback(ch, method, properties, body):

    printer.inverseOn()
    printer.println(' ' + '{:<31}'.format("TXT MESSAGE"))
    printer.inverseOff()

    printer.println(body)
    printer.feed(3)

    print("complete")
    print " [x] Received %r" % (body)

channel.basic_consume(callback,
    queue='texts',
    no_ack=True)

如果有趣的话，这就是.py的其余部分

try:
    from urllib.parse import urlparse
except ImportError:
    from urlparse import urlparse
import pika, os, sys
from Adafruit_Thermal import *

printer = Adafruit_Thermal("/dev/serial0", 19200, timeout=5)

url_str = os.environ.get('CLOUDAMQP_URL','amqp://xxxxx')
url = urlparse(url_str)
params = pika.ConnectionParameters(host=url.hostname, virtual_host=url.path[1:],
    credentials=pika.PlainCredentials(url.username, url.password))

connection = pika.BlockingConnection(params)
channel = connection.channel()
channel.queue_declare(queue='texts')

def callback(ch, method, properties, body):

    printer.inverseOn()
    printer.println(' ' + '{:<31}'.format("TXT MESSAGE"))
    printer.inverseOff()

    printer.println(body)
    printer.feed(3)

    print("complete")
    print " [x] Received %r" % (body)

channel.basic_consume(callback,
    queue='texts',
    no_ack=True)

try:

    channel.start_consuming()

except KeyboardInterrupt:

    print "Break detected"
    channel.stop_consuming()

connection.close()

sys.exit()

Answer 1

不确定你使用的是哪种皮卡版本；但根据[1]，回调参数是第二个参数。队列参数是第一个。i、 e

channel.basic_consume("texts", callback, no_ack=True)

[1]-https://pika.readthedocs.io/en/stable/modules/adapters/blocking.html#pika.adapters.blocking_connection.BlockingChannel