【pika使用报错queue_declare() missing 1 required positional argument: 'queue'】的更多相关文章

pika使用报错queue_declare() missing 1 required positional argument: 'queue'

报错如下截图,使用pika的版本太高导致,重新安装pika==0.10.0解决.…

Django在根据models生成数据库表时报错： __init__() missing 1 required positional argument: 'on_delete'

原因: 在django2.0后,定义外键和一对一关系的时候需要加on_delete选项,此参数为了避免两个表里的数据不一致问题,不然会报错:TypeError: __init__() missing 1 required positional argument: 'on_delete'举例说明:user=models.OneToOneField(User)owner=models.ForeignKey(UserProfile)需要改成:user=models.OneToOneField(User…

missing 1 required positional argument: 'on_delete'报错解决方案

最近在使用Python的Django框架开发web站点,通过models.py文件建表后,执行数据库迁移(命令行:mange.py makemigrations)时报错,下面是查看官方文档后找到的解决方案. 官方文档:Model field reference 报错内容: class Guest(models.Model): File "C:\Users\dell\guest\sign\models.py", line 18, in Guest event = models.Forei…

Django报错：__init__() missing 1 required positional argument: 'on_delete'

原因: 在django2.0后,定义外键和一对一关系的时候需要加on_delete选项,此参数为了避免两个表里的数据不一致问题,不然会报错:TypeError: __init__() missing 1 required positional argument: 'on_delete'举例说明:user=models.OneToOneField(User)owner=models.ForeignKey(UserProfile)需要改成:user=models.OneToOneField(User…

【Selenium+Python Webdriver】报错之：TypeError: user_login() missing 1 required positional argument: 'self'

先贴一下源码: base.py文件如下: from selenium import webdriver class Page(object): ''' 页面基础类,用于所有页面的继承 ''' rb_url = 'http://XXXXX' def __init__(self,selenium_driver,base_url=rb_url): self.driver = selenium_driver self.base_url = base_url self.timeout = 30 def o…

执行python manage.py makemigrations时报错TypeError: __init__() missing 1 required positional argument: 'on_delete'

在执行python manage.py makemigrations时报错: TypeError: __init__() missing 1 required positional argument: 'on_delete' 解决方法: 在连接外键时加上: on_delete=models.CASCADE…

Django ：执行 python manage.py makemigrations 时报错 TypeError: __init__() missing 1 required positional argument: 'on_delete'

原因 执行命令 python manage.py makemigrations 报错 TypeError: __init__() missing 1 required positional argument: 'on_delete' 定义外键报错 解决办法 字段名称 = models.ForeignKey('表名', on_delete=models.CASCADE) on_delete=models.CASCADE 在 django2.0之前有默认值,之后版本就需要显式指定…

Django关联数据库时报错TypeError: __init__() missing 1 required positional argument: 'on_delete'

sgrade = models.ForeignKey("Grades",) 执行python manage.py makemigrations后出现TypeError: __init__() missing 1 required positional argument: 'on_delete'缺少一个参数  'on_delete'加上就好了sgrade = models.ForeignKey("Grades",on_delete=models.CASCADE,)…

Django在根据models生成数据库表时报 __init__() missing 1 required positional argument: 'on_delete'

from django.db import models # Create your models here. class Category(models.Model): caption = models.CharField(max_length=) class ArticleType(models.Model): caption = models.CharField(max_length=) class Article(models.Model): title = models.CharFie…

Django2.1在根据models生成数据库表时报 __init__() missing 1 required positional argument: 'on_delete'

解决办法: a=models.ForeignKey('BookInfo',on_delete=models.CASCADE,) 即在外键值的后面加上 on_delete=models.CASCADE 原因: 在django2.0后,定义外键和一对一关系的时候需要加on_delete选项,此参数为了避免两个表里的数据不一致问题,不然会报错:TypeError: __init__() missing 1 required positional argument: 'on_delete'举例说明:us…