IBM Cloud Cloudant使用遇阻：ModuleNotFoundError问题求助

问题现象 #

运行Cloudant连接代码时抛出ModuleNotFoundError: No module named 'cloudant'错误，导致代码无法初始化。

代码片段 #

from cloudant.client import Cloudant
from cloudant.error import CloudantException
def main(param_dict):
    try:
        client = Cloudant.iam(
            account_name=param_dict[USERNAME],
            api_key=param_dict[APIKEY],
            connect=True,
        )
        print(f"Databases: {client.all_dbs()}")
    except CloudantException as cloudant_exception:
        print("unable to connect")
        return {"error": cloudant_exception}
    except (requests.exceptions.RequestException, ConnectionResetError) as err:
        print("connection error")
        return {"error": err}

    return {"dbs": client.all_dbs()}

错误日志 #

[
  "2023-04-05T15:04:17.941831Z    stderr: Traceback (most recent call last):",
  "2023-04-05T15:04:17.942135Z    stderr: File \"/action/1/bin/exec__.py\", line 44, in <module>",
  "2023-04-05T15:04:17.944270Z    stderr: from main__ import main as main",
  "2023-04-05T15:04:17.944503Z    stderr: File \"/action/1/bin/main__.py\", line 1, in <module>",
  "2023-04-05T15:04:17.944939Z    stderr: from cloudant.client import Cloudant",
  "2023-04-05T15:04:17.945205Z    stderr: ModuleNotFoundError: No module named 'cloudant'",
  "2023-04-05T15:04:17.958247Z    stderr: Command exited abruptly during initialization.",
  "2023-04-05T15:04:17.958Z       stderr: The action did not initialize or run as expected. Log data might be missing."
]

解决方法 #

• 声明依赖包：在项目根目录创建requirements.txt文件，添加cloudant==2.15.0（选择与IBM Cloud Python runtime兼容的版本，推荐2.x系列）
• 部署时包含依赖：使用IBM Cloud CLI部署函数时，通过--requirements参数指定依赖文件，示例命令：

  ibmcloud fn action update your-action-name main.py --kind python:3.9 --requirements requirements.txt
  

• 验证Runtime兼容性：确保使用的Python runtime版本（如python:3.9）支持cloudant包，cloudant 2.x要求Python 3.6及以上版本
• 本地预测试：先在本地环境执行pip install cloudant安装依赖，运行代码确认逻辑正常后再部署到云端

内容的提问来源于stack exchange，提问作者Amine El Hammoumi