Redis：ImportError虽然依赖关系得到满足答案

【问题标题】：Redis: ImportError though dependencies are satisfiedRedis：ImportError虽然依赖关系得到满足
【发布时间】：2019-10-15 17:57:00
【问题描述】：

我正在检查Redis Queue 在虚拟环境中的使用。目录结构如下：

Scripts-V3 (Virtualenv is at this level)
├── RQ
│   ├── countwords.py
│   └── queue.py

这与documentation 中给出的示例相同。

queue.py 是：

from redis import Redis
from rq import Queue
from countwords import count_words_at_url
import time

# Tell RQ what Redis connection to use
redis_conn = Redis()
q = Queue(connection=redis_conn)  # no args implies the default queue

# Delay execution of count_words_at_url('http://nvie.com')
job = q.enqueue(count_words_at_url, 'http://nvie.com')
print(job.result)   # => None

# Now, wait a while, until the worker is finished
time.sleep(2)
print(job.result)

我已检查是否安装了所需的包（redis、rq）：

> pip3 install rq                                                          
Requirement already satisfied: rq in /Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages (1.0)
Requirement already satisfied: redis>=3.0.0 in /Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages (from rq) (3.2.1)
Requirement already satisfied: click>=5.0 in /Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages (from rq) (7.0)

然而，当我运行 python3 queue.py 时，它失败了：

Traceback (most recent call last):
  File "queue.py", line 1, in <module>
    from rq import Queue
  File "/Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages/rq/__init__.py", line 6, in <module>
    from .connections import (Connection, get_current_connection, pop_connection,
  File "/Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages/rq/connections.py", line 7, in <module>
    from redis import Redis
  File "/Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages/redis/__init__.py", line 1, in <module>
    from redis.client import Redis, StrictRedis
  File "/Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages/redis/client.py", line 10, in <module>
    from redis._compat import (basestring, imap, iteritems, iterkeys,
  File "/Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages/redis/_compat.py", line 106, in <module>
    from queue import Queue
  File "/Users/abc/Work/driver-pic-orient/Scripts-V3/RQ/queue.py", line 1, in <module>
    from rq import Queue
ImportError: cannot import name 'Redis' from 'redis' (/Users/abc/Work/driver-pic-orient/venv/lib/python3.7/site-packages/rq/__init__.py)

我不明白为什么。怎么回事？

【问题讨论】：

标签： python python-3.x redis queue message-queue

【解决方案1】：

这个问题是交叉发布的，已经在rq's Github page得到了回答：

https://github.com/rq/rq/issues/1091

在您的回溯中查看此处
File "/Users/shubhamrathi/Work/driver-pic-orient/venv/lib/python3.7/site-packages/redis/_compat.py", line 106, in <module>
    from queue import Queue
您的本地目录中有一个名为 queue.py 的文件。它会引起冲突。我认为将queue.py 重命名为<file_name>.py 将工作。

基本上，你自己的queue 阴影Python's own queue。

【讨论】：