Download binary file in memory without saving to disk.

get_binary.py

def get_binary(url):
    """Download binary file in memory without saving to disk."""    
    from io import BytesIO
    import requests
    

    try:
        response = requests.get(url)

        # Raise an exception if the request was unsuccessful (e.g., 404 Not Found)
        response.raise_for_status()

        # Get the binary content of the response
        file_content = response.content

        # Create an in-memory binary stream from the file content using BytesIO
        # This allows polars to read the data as if it were a file on disk
        file_buffer = BytesIO(file_content)

        # Read the Excel data from the buffer into a Polars DataFrame
        # The `read_excel` function can accept a file path or a file-like object
        df = pl.read_excel(file_buffer)

        return df

    except requests.exceptions.RequestException as e:
        print(f"An error occurred during download: {e}")
        return None
    except Exception as e:
        print(f"An error occurred while processing the file: {e}")
        return None