已满足要求时出现 ConfigError“必须安装 dnspython”

Question

尝试将 Colab Notebook 连接到 Atlas 上的 MongoDB。

from pymongo import MongoClient
uri = "mongodb+srv://MYUSERNAME:mypassword@mydatabase.mongodb.net/test"  

client = MongoClient(uri)

我收到一个配置错误：

"dnspython" module must be installed to use mongodb+srv:// URIs.

我安装了模块。

pip install dnspython

收到回消息

Requirement already satisfied: dnspython in /usr/local/lib/python3.6/dist-packages (1.16.0)

不知道怎么回事。

几天前，这与另一个 colab 笔记本（和另一个数据库）一起工作。

这是整个错误消息：

ConfigurationError                        Traceback (most recent call last)
<ipython-input-30-a6c89e14e64f> in <module>()
----> 1 client = MongoClient(uri)

1 frames
/usr/local/lib/python3.6/dist-packages/pymongo/mongo_client.py in __init__(self, host, port, document_class, tz_aware, connect, type_registry, **kwargs)
    522         for entity in host:
    523             if "://" in entity:
--> 524                 res = uri_parser.parse_uri(entity, port, warn=True)
    525                 seeds.update(res["nodelist"])
    526                 username = res["username"] or username

/usr/local/lib/python3.6/dist-packages/pymongo/uri_parser.py in parse_uri(uri, default_port, validate, warn)
    316     elif uri.startswith(SRV_SCHEME):
    317         if not _HAVE_DNSPYTHON:
--> 318             raise ConfigurationError('The "dnspython" module must be '
    319                                      'installed to use mongodb+srv:// URIs')
    320         is_srv = True

ConfigurationError: The "dnspython" module must be installed to use mongodb+srv:// URIs

Answer 1

您必须重新启动运行时才能使更改生效：

1. !pip install dnspython
2. 重新启动运行时 Runtime -> Restart runtime...
3. 运行你的代码