从谷歌云存储下载文件

Question

我在尝试从谷歌云存储下载CSV文件时遇到了一个问题。出于某种原因，它一直以字节而不是可读文本的形式下载文件。当我在Excel中打开下载的CSV时，Excel已经足够智能，可以将其转换为可读文本。我在这里错过了什么？我检查了谷歌的文档，但找不到任何好的信息来完成它们。提前谢谢你！

storage_client = storage.Client()
bucket = storage_client.bucket("bucket_name")
blob = bucket.blob("csv_file.csv")
blob = blob.download_as_string()
blob = blob.decode('utf-8')
blob = io.StringIO(blob)  # tranform bytes to string here
print(blob)

这是错误：UnicodeDecodeError:“utf-8”编解码器无法解码位置15-16的字节：无效的连续字节

Answer 1

您可以使用官方文档中的代码，使用函数blob。下载到文件名（）。为什么要使用blob。作为字符串（）下载？？

下载对象

from google.cloud import storage


def download_blob(bucket_name, source_blob_name, destination_file_name):
    """Downloads a blob from the bucket."""
    # bucket_name = "your-bucket-name"
    # source_blob_name = "storage-object-name"
    # destination_file_name = "local/path/to/file"

    storage_client = storage.Client()

    bucket = storage_client.bucket(bucket_name)

    # Construct a client side representation of a blob.
    # Note `Bucket.blob` differs from `Bucket.get_blob` as it doesn't retrieve
    # any content from Google Cloud Storage. As we don't need additional data,
    # using `Bucket.blob` is preferred here.
    blob = bucket.blob(source_blob_name)
    blob.download_to_filename(destination_file_name)

    print(
        "Blob {} downloaded to {}.".format(
            source_blob_name, destination_file_name
        )
    )