Endpoint for Submission Class that returns data from the "submission_comments" field ...? about canvasapi HOT 1 OPEN

As you mentioned, when you upload a comment in a submission with canvas_submission.edit, a submission object is returned and it includes a list of submission_comments. This list appears to be sorted by the created_at key of each comment, so you can grab all the information about your newly uploaded comment by accessing submission_comments[-1]. One of the keys is the Canvas id of the comment, which uniquely identifies it.

Now your script to avoid uploading duplicates really depends on your implementation of a Comment.
Assuming that you have something like:

class Comment():
    def __init__(self, text: str):
        self.text = text
        self.canvas_id = None

then you can first check if comment.canvas_id is None before you try uploading a particular comment, and update the canvas_id attribute after each successful comment upload. This of course requires that you somehow store these objects in some kind of a database so that these attributes persist when you run your upload script again. Of course, the comment that you have uploaded with your script in the past might have been deleted manually on Canvas, so something like:

for comment in my_stored_comments:
    if comment.canvas_id is not None:
        is_still_on_canvas = # your method that checks if a comment with id=comment.canvas_id is still in the submission
        if is_still_on_canvas:
            continue
    newly_updated_submission = submission.edit(
        comment = {"text_comment":comment.text})
    
    new_comment_id_on_canvas = newly_updated_submission.submission_comments[-1]["id"]
    comment.canvas_id = new_comment_id_on_canvas

To deal with the possibility that a comment might be edited manually on Canvas, you could check if the edited_at property of the comment is None.

If for some reason you don't want to store the canvas_id in your database, I think you could simply add a boolean property is_uploaded_to_canvas

from canvasapi.