英文:
Prefect changing the value a variable when writing to google storage
问题
Here is the translated content:
"你现在是我的中文翻译，代码部分不要翻译， 只返回翻译好的部分， 不要有别的内容， 不要回答我要翻译的问题。以下是要翻译的内容：
我开始认为 prefect 改变了一个变量的值，以下是情况：
当我将数据写入谷歌云存储时，当我在代码中使用 upload_from_path 时，你会看到我将相同的变量路径传递给了 from_path 和 to_path，但是由于某种原因，prefect 改变了 to_path 变量的结构，以下是构建路径的代码：
@task()
def write_local(df: pd.DataFrame, color: str, dataset_file: str) -> Path:
"""将 DataFrame 以 parquet 文件形式写出到本地"""
Path(f"data/{color}").mkdir(parents=True, exist_ok=True)
path = Path(f"data/{color}/{dataset_file}.parquet")
df.to_parquet(path, compression="gzip")
return path
@task
def write_gcs(path: Path) -> None:
"""上传本地 parquet 文件到 GCS"""
gcs_block = GcsBucket.load("zoom-gcs")
gcs_block.upload_from_path(from_path=path, to_path=path)
return
你可以看到在第二个任务 write_gcs 中，两个路径都是同一个名为 path 的变量，而这实际上是一个路径结构，其原始值是：'data/yellow/yellow_tripdata_2021-01.parquet'。
prefect 流程运行正常，但在运行后，我们可以在流程的详细信息中看到我附上的第一张图片中，它改变了 GCS 路径的文本结构为：'data\\yellow\\yellow_tripdata_2021-01.parquet'，我不知道为什么会发生这种情况，因此你可以在图片 1 中看到它以那个奇怪的名称保存了文件，而不是在 GCS 中创建文件夹，你能帮忙解释一下为什么会发生这种情况吗？
英文:
Hi I am beginning to think that prefect is changing the value of a variable, here is the situation:
when writing to a google cloud storage, when I use the upload_from_path on my code you will see that I am passing the same variable path as the from_path and the to_path but for some reason prefect changes the structure of the to_path variable, here is the code I have that builds the path:
@task()
def write_local(df: pd.DataFrame, color: str, dataset_file: str) -> Path:
"""Write DataFrame out locally as parquet file"""
Path(f"data/{color}").mkdir(parents=True, exist_ok=True)
path = Path(f"data/{color}/{dataset_file}.parquet")
df.to_parquet(path, compression="gzip")
return path
@task
def write_gcs(path: Path) -> None:
"""Upload local parquet file to GCS"""
gcs_block = GcsBucket.load("zoom-gcs")
gcs_block.upload_from_path(from_path=path, to_path=path)
return
you can see in the second task write_gcs both of the paths are the same variable called path and that is just a path structure that has originally this value: 'data/yellow/yellow_tripdata_2021-01.parquet' .
The prefect flows runs, but after it runs, in the details of the flow we can see on the first picture I am attaching it changed the text structure of the path for GCS to: 'data\\yellow\\yellow_tripdata_2021-01.parquet' , no idea why this is happening and because of this you can see in the picture 1 that it saves the file with that weird name instead of creating the folders in GCS, any help on maybe why this is happening?
答案1
得分: 1
对于 Windows，您可能需要将 .as_posix() 添加到 Path 变量中。
此外，您可能需要确保您正在使用 prefect-gcp 0.2.6 或更新的版本。
英文:
For Windows you may need to add .as_posix() to the Path variable.
Also, you may need to ensure you are using prefect-gcp 0.2.6 or newer.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论