使用PyRal获取Rally UserStory附件时遇错误，求技术解答

Hey there! Since you’ve already got your Rally authentication and environment setup squared away, let’s dive into figuring out why that getAttachment call is giving you trouble. Here’s what you can do to diagnose the problem, plus details you should share to help pinpoint the issue faster:

1. Share the full error message #

First off, paste the complete error traceback you’re seeing. That includes the exception type (like HTTPError, PyralError, etc.) and the exact error text—this is the biggest clue for figuring out what’s broken. For example, a 403 error points to permission issues, while a 404 might mean the attachment or UserStory can’t be found.

2. Show a snippet of your relevant code #

Share the code you’re using to fetch the UserStory and call getAttachment. Even a short snippet helps spot issues like:

• Passing the wrong type of object to getAttachment (it needs a valid Rally UserStory object, not just an ID)
• Missing required fetch parameters when getting the UserStory
• Typos in method names or parameters

Here’s a quick example of how a working flow might look, for reference:

from pyral import Rally

# Your auth setup (redacted)
rally = Rally(server="rally1.rallydev.com", workspace="Your Workspace", project="Your Project", ...)

# Fetch the target UserStory
target_story = rally.get("UserStory", query='FormattedID = "US1234"', fetch=True)[0]

# Retrieve and save attachments
attachments = rally.getAttachment(target_story)
for attachment in attachments:
    with open(attachment.Name, "wb") as file:
        file.write(attachment.Content)

3. Double-check permissions & attachment existence #

• Confirm your Rally account has read access to the UserStory and its attachments. Sometimes even if you can see the story in the web UI, granular attachment permissions might block the API call.
• Verify the UserStory actually has attachments in the Rally web interface—it’s easy to accidentally target a story with no files attached!

Once you share those details, we can zero in on the exact problem.

内容的提问来源于stack exchange，提问作者sc305495