edxcut = edX Course Uber Tool
Would you like to script the creation of course content on an edX instance, or the editing of course structure, including command-line access to download specific problem, html, and video assets from a course, or command-line access to upload new problem, html, and video assets (including video transcripts) to an existing course? Or would you like to copy a single XBlock from one OpenEdX course to another, including static assets?
Have you ever had your open edX course unexpectedly break, due to some change in how the edX platform does grading, or due to some code change in a custom response grading library?
Would you like to be able to automatically verify that all the auto-graded problems in your edX course are functioning as expected, without having to manually click through all the problems and remember test cases to enter?
edxcut is an open source package for performing programmatic creation, reading, updating, and deletion (CRUD) of edX course content, via its edxapi API interface, which mimics an instructor interacting with an OpenEdX Studio instance. edXcut also provides the ability to perform automated unit tests of answer box grading correctness, across all problems, in a live, open edX course instance.
The core of edxcut is the edxapi module, which can be accessed and used either via a python program, or from the command line - see help text.
Suppose you have an OpenEdX site at https://studio.univ.edu
, and a
course staff user account [email protected]
, with password edx
for the course with ID
course-v1:edX+DemoX+Demo_Course
. You can list the chapters in that course using this command:
edxcut edxapi -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course list_chapters
obtaining a response like this:
Found 6 chapters in course edX Demonstration Course
Introduction -> block-v1:edX+DemoX+Demo_Course+type@chapter+block@d8a6192ade314473a78242dfeedfbf5b
Example Week 1: Getting Started -> block-v1:edX+DemoX+Demo_Course+type@chapter+block@interactive_demonstrations
Example Week 2: Get Interactive -> block-v1:edX+DemoX+Demo_Course+type@chapter+block@graded_interactions
Example Week 3: Be Social -> block-v1:edX+DemoX+Demo_Course+type@chapter+block@social_integration
About Exams and Certificates -> block-v1:edX+DemoX+Demo_Course+type@chapter+block@1414ffd5143b4b508f739b563ab468b7
holding section -> block-v1:edX+DemoX+Demo_Course+type@chapter+block@9fca584977d04885bc911ea76a9ef29e
You may also specify the output to be in JSON format with the -j
flag, obtaining output
such as this.
If your OpenEdX site is behind an HTTP basic auth control, then add
--auth username,password
with the appropriate username and password
for site access.
The list_xblocks
edxapi command is useful for listing the contents
of a container xblock, such as chapters and sequentials, e.g.:
edxcut edxapi -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
list_xblocks "Example Week 1: Getting Started"
should generate output like this:
Found 2 sequentials in chapter Example Week 1: Getting Started
Lesson 1 - Getting Started -> block-v1:edX+DemoX+Demo_Course+type@sequential+block@19a30717eff543078a5d94ae9d6c18a5
Homework - Question Styles -> block-v1:edX+DemoX+Demo_Course+type@sequential+block@basic_questions
and to see the verticals within, say, the "Homework - Question Styles" sequential:
edxcut edxapi -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
list_xblocks "Example Week 1: Getting Started" "Homework - Question Styles"
to obtain output like this:
Found 8 verticals in sequential Homework - Question Styles
Pointing on a Picture -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@2152d4a4aadc4cb0af5256394a3d1fc7
Drag and Drop -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@47dbd5f836544e61877a483c0b75606c
Multiple Choice Questions -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@54bb9b142c6c4c22afc62bcb628f0e68
Mathematical Expressions -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@vertical_0c92347a5c00
Chemical Equations -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@vertical_1fef54c2b23b
Numerical Input -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@2889db1677a549abb15eb4d886f95d1c
Text input -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@e8a5cc2aed424838853defab7be45e42
Instructor Programmed Responses -> block-v1:edX+DemoX+Demo_Course+type@vertical+block@fb6b62dbec4348528629cf2232b86aea
You can continue the path specification (chapter...sequential...vertical) to list the contents of a vertical, e.g.:
edxcut edxapi -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
list_xblocks "Example Week 1: Getting Started" "Homework - Question Styles" "Numerical Input"
to obtain output like this:
Found 2 problems in vertical Numerical Input
Numerical Input -> block-v1:edX+DemoX+Demo_Course+type@problem+block@75f9562c77bc4858b61f907bb810d974
-> block-v1:edX+DemoX+Demo_Course+type@discussion+block@501aed9d902349eeb2191fa505548de2
Note this vertical has two XBlocks, but the second one has an empty
display_name
(from the usage key (aka asset ID) you can tell it's a discussion
XBlock).
To download the content of a specific XBlock asset, use the get_xblock
edxapi command, followed by a path specification (providing chapter sequential vertical url_name e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
get_xblock "Example Week 1: Getting Started" "Homework - Question Styles" "Numerical Input" "Numerical Input"
to obtain JSON output such as this. You can also obtain the same content by specifying the specific XBlock's usage key (also known as an asset ID) instead of the chapter + sequential + vertica + asset content path, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
get_xblock block-v1:edX+DemoX+Demo_Course+type@problem+block@75f9562c77bc4858b61f907bb810d974
To download the content for a video XBlock, use get_xblock
, e.g.
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
get_xblock block-v1:edX+DemoX+Demo_Course+type@video+block@5c90cffecd9b48b188cbfea176bf7fe9
to obtain JSON output such as this.
To download the associated video transcript, you'll need to point to the OpenEdX LMS site (and not the Studio site), e.g.:
edxcut edxapi -j -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
--videoid qWxm7CA2v24 get_video_transcript 5c90cffecd9b48b188cbfea176bf7fe9
Note that the url_name
for the video is specified, and not the whole
usage_key (although there's a fallback mechanism by which if you do
provide a usage_key
, edxapi will extract the url_name
from it for
you).
Also note that you will need to specify the video's ID, here, a youtube ID; that's used by edX's transcripts mechanism to find the transcript with the correct timing.
You shold obtain obtain JSON output such as this; by specifying the --output-srt
flag, the transcript will be provided in srt format instead of in srt.sjson format.
To create a new container XBlock, just specify the path desired to the new XBlock, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
create_xblock "New Chapter"
The output should give usage keys for the new XBlock, e.g.:
{
"locator": "block-v1:edX+DemoX+Demo_Course+type@chapter+block@f3b7608b609b4edf881531ca00e99c9d",
"courseKey": "course-v1:edX+DemoX+Demo_Course"
}
create_xblock
will only create a single new XBlock. If you wish to create all the XBlocks needed in a path, e.g. new chapter, new sequential, new vertical, use the updage_xblock
command, with the --create
flag, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
--create update_xblock "New Chapter" "New Sequential" "New Vertical"
This will return the usage key for the last XBlock created, e.g.:
{
"data": null,
"id": "block-v1:edX+DemoX+Demo_Course+type@vertical+block@5b9ef8ee60984408b1047b1d5e4a9ef4",
"metadata": {
"display_name": "New Vertical"
}
}
To create a new HTML or problem XBlock, use the update_xblock
edxapi command, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
--create -t html -d "<html>hello world2</html>" \
update_xblock "New Chapter" "New Sequential" "New Vertical" "New HTML page"
Note that the -t
option is used to specify the content type, e.g. html
or problem
.
The page will contain the HTML string specified in the -d
argument, and the return will provide the newly created XBlock's usage key, e.g.:
{
"data": "<html>hello world2</html>",
"id": "block-v1:edX+DemoX+Demo_Course+type@html+block@994878a552894f67b28b3e050731d5a7",
"metadata": {
"display_name": "New HTML page"
}
}
You may also specify that the page content should be taken from a file, using the --data-file
option instead of -d
.
To update an existing XBlock, use update_xblock
, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
-t html -d "<html>another hello world</html>" \
update_xblock block-v1:edX+DemoX+Demo_Course+type@html+block@994878a552894f67b28b3e050731d5a7
using the usage_key
block ID provided from the creation request. This will return data saved to the new page, e.g.:
{
"data": "<html>another hello world</html>",
"id": "block-v1:edX+DemoX+Demo_Course+type@html+block@994878a552894f67b28b3e050731d5a7",
"metadata": {
"display_name": "New HTML page"
}
}
A video XBlock needs additional metadata to be specified, e.g. giving the youtube ID. This is provided using the --extra-data
argument, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
--create -t video -d "" \
--extra-data '{"metadata": {"youtube_id_1_0": "qWxm7CA2v24", "start_time": "00:05:10"}}' \
update_xblock "New Chapter" "New Sequential" "New Vertical" "New video page"
The response should include the metadata specified, e.g.:
{
"data": null,
"id": "block-v1:edX+DemoX+Demo_Course+type@video+block@91b7db1cd22e4e7c9e3068852d78abd8",
"metadata": {
"start_time": "00:05:10",
"download_video": false,
"display_name": "New video page",
"youtube_id_1_0": "qWxm7CA2v24"
}
}
A transcript can also be uploaded, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
upload_transcript sample_data/example_transcript.srt 91b7db1cd22e4e7c9e3068852d78abd8 --videoid qWxm7CA2v24
and the response should indicate success, e.g.:
{
"status": "Success",
"subs": "qWxm7CA2v24"
}
To delete an XBlock, use the delete_xblock
edxapi command, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
delete_xblock "New Chapter"
The output should confirm deletion, e.g.:
Deleted block-v1:edX+DemoX+Demo_Course+type@chapter+block@f3b7608b609b4edf881531ca00e99c9d, ret=204
It seems the edX platform does properly delete all children of a container which has been deleted, so deleting a chapter deletes all the content in the chapter in addition to deleting the chapter itself.
To list all the static assets used by a course, use the list_assets
command, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
list_assets
producing JSON output such as this. Note this can be slow, and the output large.
To retrieve a single static asset file, use get_asset
and specify the output filename with -o
, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
-o output.js \
get_asset search_problem_grader.js
To upload a new static asset, use upload_asset
, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
upload_asset test.html
with a response indicating success, e.g.:
{
"msg": "Upload completed",
"asset": {
"display_name": "test.html",
"url": "/asset-v1:edX+DemoX+Demo_Course+type@[email protected]",
"locked": false,
"portable_url": "/static/test.html",
"thumbnail": null,
"content_type": "",
"date_added": "Jul 21, 2017 at 12:36 UTC",
"id": "asset-v1:edX+DemoX+Demo_Course+type@[email protected]",
"external_url": "edx.univ.edu/asset-v1:edX+DemoX+Demo_Course+type@[email protected]"
}
}
To delete a new static asset, use delete_asset
, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
delete_asset test.html
An empty response indicates success; failures will result in an exception being raised.
To retrieve information about a static asset, use get_asset_info
, e.g.:
edxcut edxapi -j -S -v -s https://studio.univ.edu -u [email protected] -p edx -c course-v1:edX+DemoX+Demo_Course \
get_asset_info test.html
with output like:
{
"display_name": "test.html",
"url": "/asset-v1:edX+DemoX+Demo_Course+type@[email protected]",
"locked": false,
"portable_url": "/static/test.html",
"thumbnail": null,
"content_type": "",
"date_added": "Jul 21, 2017 at 12:36 UTC",
"id": "asset-v1:edX+DemoX+Demo_Course+type@[email protected]",
"external_url": "edx.univ.edu/asset-v1:edX+DemoX+Demo_Course+type@[email protected]"
}
For course functionality testing, edxcut accepts a course unit test specification file (in YAML format), and interacts with the edX course instance, mimicing a live learner, via direct calls to the edX xblock APIs for problem checking and the instructor dashboard, for resetting problem attempts. Test cases specify inputs, and whether the expected graded return should be correct or incorrect, for each case.
The course unit tests file can be produced manually, or by digesting
the course XML, or automatically, during compilation using
latex2edx. When using
latex2edx, you can specify multiple test cases within the \edXabox
macro, including both expected correct and incorrect cases.
Below is an example tests YAML file which can be run to test some problems in the demo course provided with the edX fullstack (dogwood release) virtualbox VM:
config:
course_id: course-v1:edX+DemoX+Demo_Course
site_base_url: http://192.168.33.10
username: [email protected]
password: edx
tests:
- url_name: 75f9562c77bc4858b61f907bb810d974
responses: [ 43.141, 4500, 5 ]
expected: [incorrect, correct, correct]
- url_name: 75f9562c77bc4858b61f907bb810d974
responses: [ 43.141, 4500, 9 ]
expected: [incorrect, correct, incorrect]
- url_name: 75f9562c77bc4858b61f907bb810d974
responses: [ 43.141, 4500, 9 ]
expected: incorrect
- url_name: Sample_Algebraic_Problem
responses: [A*x^2 + sqrt(y)]
expected: correct
- url_name: Sample_ChemFormula_Problem
responses: [H2SO4 -> H^+ + 2 HSO4^-]
expected: incorrect
- url_name: Sample_ChemFormula_Problem
responses: [H2SO4 -> H^+ + HSO4^-]
expected: correct
using this command line:
edxcut test test_data/test_demo_course.yaml
to get results like this:
======================================================================
Running tests from test_data/test_demo_course.yaml
[CourseUnitTestSet] Loaded 6 answer box unit tests from test_data/test_demo_course.yaml
============================================================ Running 6 tests
Test 1: OK
Test 2: OK
Test 3: OK
Test 4: OK
Test 5: OK
Test 6: OK
======================================== Tests done
6 total tests, 6 passed, 0 failed
Note that you may need to change the url_name
for the first three
cases, which have a edx-studio-specific hexstring, if using a different VM
instance.
Here's how to run unit tests on a course on edx.org:
-
Generate course unit tests YAML file. For example, with latex2edx:
latex2edx -d course_directory --output-course-unit-tests my_tests.yaml -m the_course.tex
-
Run edxcut, adding specifications for the course ID, username, and login password:
edxcut -s https://courses.edx.org \
-u [email protected] \
-p my-password \
-c course-v1:MYx+NUM+SEM \
test my_tests.yaml
The course unit tests file should be in YAML
format. It may specify config
parameters, for the course_id
, site_base_url
, username
, and password
, e.g.:
config:
course_id: course-v1:edX+DemoX+Demo_Course
site_base_url: http://192.168.33.10
username: [email protected]
password: edx
The tests file should also specify one or more tests
. Each test
should give at least the url_name
, responses
, and expected
grader output. For example:
- url_name: Sample_Algebraic_Problem
responses: [A*x^2 + sqrt(y)]
expected: correct
Note that responses
should be a list. expected
should either be a
string, correct
or incorrect
, or it may be a list (of the same
length as responses
, of those two strings.
Each test may also specify a name
.
And each test may also specify box_indexes
, which are pairs of (x,y)
coordinates for input boxes. This is useful when there is more than
one question (ie answer box) for a given problem. The coordinates are
used to construct the input box IDs, which is of the form
input_<url_name>, where indexes which \abox
(aka
<*response>
) the input is, and indexes which input element it
is, within a given abox (for aboxes with multiple input boxes). This
list should have the same length as responses
. For example:
tests:
- box_indexes:
- [0, 0]
- [1, 0]
- [2, 0]
- [3, 0]
- [4, 0]
expected: [incorrect, incorrect, incorrect, incorrect, incorrect]
name: (Simple quantum gate identities) s12-wk1-gates/test_1
responses: [Z, I, Y, Z, I]
url_name: s12-wk1-gates
Here are some example \edXabox
statements which may be used with
latex2edx, to specify answer
box unit tests:
\edXabox{type='custom' size=10 expect="I" cfn=check_paulis inline="1" test_fail="Z"}
\edXabox{type=option options="true","false" expect="false" inline="1"}
\edXabox{type=symbolic size=10 expect="7" inline="1"}
\edXabox{type=symbolic size=10 expect="7" inline="1" test_pass="7"}
\edXabox{type=symbolic size=10 expect="7" inline="1" test_pass="7" test_fail="9"}
This is an more complex example, where the grader is a custom python
script (not shown), that knows the expected answer; here, test_pass
is necessary since expect
does not provide an answer useful for the
unit test:
\edXabox{type="custom"
size=30
expect="See solutions"
options="expect=(Qubit('00')+Qubit('01'))/2"
cfn=check_qcircuit_output
hints='myhints'
test_pass="H(0),H(1)"
inline="1"
}
Note that the latex2edx correctly handles the case when there are multiple answer boxes in a single problem, e.g.:
\begin{edXproblem}{A problem with two aboxes}{url_name="a_problem"}
\edXabox{type="option" options="red","green","blue" expect="red"}
\edXabox{type="custom" expect="42" cfn="mytest"}
\end{edXproblem}
Such multi-box problems properly generate test cases with
box_indexes
set to specify the (x,y) coordinates of the input boxes.
pip install -e git+https://github.com/mitodl/edxcut.git#egg=edxcut
This package includes unit tests for build testing.
0.1 - original
0.2 - grades download added to edxapi.py (sdotglenn)
0.3 - edxapi extension for course content creation, reading, updating, and deletion
0.4 - edxapi documentation