如何从 python 中的 Azure 函数将 xlsx blob 读入 pandas

Question

我正在 azure 函数中从 blob 读取 .xslx 数据。我的代码看起来像这样：

def main(techdatablob: func.InputStream, crmdatablob: func.InputStream, outputblob: func.Out[func.InputStream]):

    # Load in the tech and crm data
    crm_data = pd.read_excel(crmdatablob.read().decode('ISO-8859-1'))
    tech_data = pd.read_excel(techdatablob.read().decode('ISO-8859-1'))

问题是当我尝试解码文件时，出现以下错误：

ValueError: Protocol not known: PK...

以及“...”之后的许多奇怪字符。关于如何正确读取这些文件有什么想法吗？

Answer 1

请参考我的代码，好像不需要加decode('ISO-8859-1'):

import logging
import pandas as pd
import azure.functions as func


def main(techdatablob: func.InputStream, crmdatablob: func.InputStream, outputblob: func.Out[func.InputStream]):
    logging.info(f"Python blob trigger function processed blob \n"
                 f"Name: {techdatablob.name}\n"
                 f"Blob Size: {techdatablob.length} bytes")

    # Load in the tech and crm data
    crm_data = pd.read_excel(crmdatablob.read())
    logging.info(f"{crm_data}")
    tech_data = pd.read_excel(techdatablob.read())
    logging.info(f"{tech_data}")

注意：您的 function.json 应该如下所示。否则会报错。

{
      "name": "techdatablob",
      "type": "blobTrigger",
      "direction": "in",
      "path": "path1/{name}",
      "connection": "example"
    },
    {
      "name": "crmdatablob",
      "dataType": "binary",
      "type": "blob",
      "direction": "in",
      "path": "path2/data.xlsx",
      "connection": "example"
    },
    {
      "name": "outputblob",
      "type": "blob",
      "direction": "out",
      "path": "path3/out.xlsx",
      "connection": "example"
    }

这与您的 function.json 之间的区别在于您缺少 dataType 属性。

我的测试结果是这样的，好像没什么问题。

如何从 python 中的 Azure 函数将 xlsx blob 读入 pandas

How to read xlsx blob into pandas from Azure function in python

python

blob

azure

pandas

azure-functions