python - 知道为什么在 Python 中创建新的 MongoClient 对象后我会得到 "name ' sys' is not defined”吗？

Question

我正在开发一个 Discord 机器人，它可以响应一些用户命令将一些数据保存到 mongodb 数据库中。奇怪的是它适用于 repl.it，但我在 SparkedHost 上收到此错误。创建新的 MongoClient 对象时出现奇怪的错误。服务器安装了 Python3 3.6.15。追溯看起来像这样:

Traceback (most recent call last):
File "/home/container/.local/lib/python3.6/site-packages/discord/ext/commands/core.py", 
line 85, in wrapped
ret = await coro(*args, **kwargs)
File "/home/container/main.py", line 36, in listMyWants
await botcommandscontroller.listWants(ctx, ctx.author.id)
File "/home/container/botcommandscontroller.py", line 10, in listWants
wants = mongodbcontroller.getWants(targetID)
File "/home/container/mongodbcontroller.py", line 17, in getWants
cluster = MongoClient(os.getenv('MONGOCONNECT'))
File "/home/container/.local/lib/python3.6/site-packages/pymongo/mongo_client.py", line 
712, in __init__
srv_max_hosts=srv_max_hosts,
File "/home/container/.local/lib/python3.6/site-packages/pymongo/uri_parser.py", line 
467, in parse_uri
python_path = sys.executable or "python"
NameError: name 'sys' is not defined

这是我的 getWants 方法:

def getWants(userID):
    load_dotenv()
    cluster = MongoClient(os.getenv('MONGOCONNECT'))
    wantcollection = pokedb["wants"]
    userWants = ""
    pipeline = [{'$lookup':
                {'from': 'pokemon',
                'localField': 'dexnum',
                'foreignField': 'NUMBER',
                'as': 'userwants'}},
               {'$unwind': '$userwants'},
               {'$match':
               {'discord_id': userID}}]
    for doc in (wantcollection.aggregate(pipeline)):
        if doc['shiny']:
            userWants += "shiny "
        userWants += doc['userwants']['NAME'] + ", "
    if len(userWants) > 2:
        userWants = userWants[0:len(userWants) - 2]
    return userWants

此方法可能没有任何相关信息，但这里是 listWants:

async def listWants(ctx, targetID):
    if targetID is None:
        await ctx.send(Constants.ErrorMessages.NO_USER_FOUND)
        return
    wants = mongodbcontroller.getWants(targetID)
    if wants != "":
        await ctx.send(wants)
    else:
        await ctx.send(Constants.ErrorMessages.NO_WANTS_FOUND)

Answer 1

我在使用 pymongo 4.xx 版本时遇到过这个问题，我通过卸载 pymongo 解决了这个问题，然后我尝试pip3 安装 'pymongo[srv]'

它适用于 'mongodb+srv://....' 格式的连接字符串。

有关 pymongo 安装的更多信息 pymongo - "dnspython" module must be installed to use mongodb+srv:// URIs