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How to extract a download file-id for a selected submission using the API

Question asked by Mikael Fridenfalk on May 27, 2019
Latest reply on May 27, 2019 by Mikael Fridenfalk



By the Python canvasapi and the command todo_items = canvas.get_todo_items(), I am in some initial experiments able to find the web address of each ToDo speedgrading page, thus covering all student submissions that need to be graded. When such a page is opened, I only need to click on a file download symbol to download the selected student submission file. 


But how is this link (for download itself) obtained, if I wish to automate the whole process (and not to use for instance a web driver to click on this link)? The link I am looking for should have the format:



Where [...] is the web domain and #1 to #3 known integers (by extraction of information from todo_items). In other words, what I am looking for is the integer #4, which is some kind of a download id that I cannot find any specification for how to extract, not even when I analyze the source code of each speedgrader page. However, when I insert the link above, download of the selected file is automatically invoked.


Is it possible to extract this integer?