为什么 python 导入在 VS 代码中不起作用？

我已经下载了一个 pip 包“xlrd”来读取一个 excel 文件。当我尝试运行该模块时，程序显示我尚未下载该 pip。我一直无法找到答案，因为我不知道要问什么问题。我怎样才能解决这个问题？

下载 pip 时的消息：“要求已经满足：c:\users\thecodeadd\appdata\local\programs\python\python310\lib\site-packages (2.0.1) 中的 xlrd”它在“问题”中显示的内容程序：

[{
    "resource": "/c:/Users/thecodeadd/Documents/Stuff/Program/Programs/Python/Trialxlrd.py",
    "owner": "_generated_diagnostic_collection_name_#0",
    "code": {
        "value": "reportMissingImports",
        "target": {
            "$mid": 1,
            "external": "https://github.com/microsoft/pylance-release/blob/main/DIAGNOSTIC_SEVERITY_RULES.md#diagnostic-severity-rules",
            "path": "/microsoft/pylance-release/blob/main/DIAGNOSTIC_SEVERITY_RULES.md",
            "scheme": "https",
            "authority": "github.com",
            "fragment": "diagnostic-severity-rules"
        }
    },
    "severity": 4,
    "message": "Import \"xlrd\" could not be resolved",
    "source": "Pylance",
    "startLineNumber": 1,
    "startColumn": 8,
    "endLineNumber": 1,
    "endColumn": 12

}]