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On your computer

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  1. Copy the notebook URL:
  2. Run Pluto

    (Also see: How to install Julia and Pluto)

  3. Paste URL in the Open box

Frontmatter

If you are publishing this notebook on the web, you can set the parameters below to provide HTML metadata. This is useful for search engines and social media.

Author 1
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begin
import Pluto
import UUIDs: UUID
import Distributed
using PlutoUI
using DataFrames
import CSV
end
7.2 s
true
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let
function solution_pascal(n)
if n <= 1
[1.0]
else
prev = solution_pascal(n - 1)
0.5 * ([prev..., 0] .+ [0, prev...])
end
end

function solution_gaussian_kernel(n)
solution_pascal(2n+1)
end

K = solution_gaussian_kernel(9)
K[1] < K[5] < K[9] > K[13] > K[17]
end
722 ms

Part 1: autograding

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161 μs

Step 1: Select submission files

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160 μs

You need to write some code that returns the absolute paths to the students' homework submissions. The following code works for me, but probably not for you.

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230 μs
Error message

IOError: readdir("/home/fons/disorganised-mess/autograding/submissions/"): no such file or directory (ENOENT)

Stack trace

Here is what happened, the most recent locations are first:

  1. uv_error
    from libuv.jl:97
  2. readdir(dir::String; join::Bool, sort::Bool)
    from file.jl:851
  3. from This cell: line 2
    submission_files = let	all = readdir("/home/fons/disorganised-mess/autograding/submissions/"; join=true)	filter(f -> endswith(f, ".jl"), all)
Probably not your fault!
submission_files = let
all = readdir("/home/fons/disorganised-mess/autograding/submissions/"; join=true)
filter(f -> endswith(f, ".jl"), all)
end
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---

It should return an arrays of strings, something like:

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208 μs
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14.4 μs
Error message

Another cell defining submission_files contains errors.

C'est la vie !
if !all(isabspath, submission_files)
md"""
!!! warning
Submission paths need to be _absolute_
"""
end
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---

Step 2: autograde actions

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165 μs

I have already written these, you can ignore this.

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172 μs
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48.9 ms
all (generic function with 11 methods)
all
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9.0 μs
107.5
sum(actions) do action
try
action.points_value
catch
0
end
end
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19.9 ms
Error message

UndefVarError: HTMLTable not defined

Stack trace

Here is what happened, the most recent locations are first:

  1. from This cell: line 1
    HTMLTable(autograde_results_df)
HTMLTable(autograde_results_df)
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---

Step 3: autograde all notebooks

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165 μs
Error message

Another cell defining submission_files contains errors.

md"**Click to start running the notebooks:**

$(@bind run_notebooks CheckBox()) run $(length(submission_files)) notebooks

---"
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---
pluto_session = Pluto.ServerSession(;options=Pluto.Configuration.from_flat_kwargs(
launch_browser=false,
require_secret_for_open_links=false,
require_secret_for_access=false,
workspace_use_distributed=false,
port=2468,
))
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215 ms
submission_files_to_run = run_notebooks ? Pluto.tamepath.(submission_files) : String[]
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216 μs
Pluto
Pluto
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9.5 μs
notebooks = let
for nb in values(pluto_session.notebooks)
Pluto.SessionActions.shutdown(pluto_session, nb)
end
map(submission_files_to_run) do path
nb = Pluto.load_notebook(Pluto.tamepath(path))
pluto_session.notebooks[nb.notebook_id] = nb
Pluto.update_save_run!(pluto_session, nb, nb.cells; run_async=false, prerender_text=true)
nb
end
end
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86.1 μs
autograde_results = map(notebooks) do nb
map(actions) do action
do_action(nb, action)
end
end
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27.0 ms
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66.3 μs
⌀ (This table has no columns)
⌀
(This table has no rows)
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384 ms
autograde_results.csv
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436 ms

Part 2: manual review

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166 μs

Step 1: start notebook server

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660 μs

Click to start notebook server:

run notebook server

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918 μs
if run_server
@async Pluto.run(pluto_session)
md"> Server is running at [https://localhost:2468](https://localhost:2468)"
end
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5.0 ms

Step 2: manual grade actions

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165 μs
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37.6 ms
53
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7.8 ms

Step 3: select notebook

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161 μs
Error message

BoundsError: attempt to access 0-element Vector{Pair} at index [1]

Stack trace

Here is what happened, the most recent locations are first:

  1. getindex
    from array.jl:861
  2. first(a::Vector{Pair})
    from abstractarray.jl:398
  3. get(select::PlutoUI.BuiltinsNotebook.Select)
    from Builtins.jl:667
  4. macro expansion
    from This cell: line 126
  5. Show more...
@bind inspected_notebook_index_str Select([string(i) => nb.path for (i,nb) in enumerate(notebooks)])
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---
Autograde results for selected homework


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168 μs
Error message
Another cell defining inspected_notebook_index_str contains errors.
Silly computer!
autograde_results_df[inspected_notebook_index, :]
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---
Editable view of selected homework


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175 μs
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269 μs
Manual grading


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187 μs
Currently stored grades for this notebook:


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174 μs
Error message
Another cell defining inspected_notebook_index_str and inspected_manual_results contains errors.
Silly computer!
if inspected_manual_results === missing
	get(manual_results_dict, basename(inspected_notebook.path), 
	md"_Scores for this homework are not yet saved._"
		)
else
	inspected_manual_results
end
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---
Error message
Another cell defining inspected_notebook_index_str contains errors.
# struct ManualCheckAction <: GradingAction
# 		name
# 		points_value::Number
# 		rubric
# 	end
begin
	inspected_notebook
	manual_results_dict
@bind inspected_manual_results let
	boxes = map(enumerate(manual)) do (i,action)
		"""<tr>
		<td><input type='number' id='field$(i)' min=0 max=$(action.points_value) step=1 value=$(action.points_value)><code> / $(action.points_value)</code></td>
		<td>$(repr(MIME"text/html"(), action.rubric))</td>
		</tr>"""
	end
	
	"""
<div id="hello">
<table>
	<tbody>
	$(join(boxes))
	</tbody>
</table>
<input type="submit" value="Save!">
	</div>

	
<style>
	div#hello table td {
		text-align: left;
	}
	div#hello table input[type=number] {
		width: 4em;
		text-align: center;
	}
</style>
<script>
	const div = this.querySelector("#hello")
	const table = div.querySelector("table")
	const inputs = table.querySelectorAll("input")
	
	const update_value = () => {
		//div.value = Object.fromEntries(Array.from(inputs).map((b) => [b.id, b.value]))
		div.value = Array.from(inputs).map((b) => Number(b.value))
	}
	
	inputs.forEach(el => {
		el.oninput = (e) => {
			update_value()
			e.stopPropagation()
		}
	})
	
	const submit = div.querySelector("input[type=submit]")
	submit.onclick = () => {
		update_value()
		div.dispatchEvent(new CustomEvent("input", {}))
	}

</script>
""" |> HTML
end
end
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---
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38.5 ms
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22.3 μs
Error message
Another cell defining inspected_notebook_index_str and inspected_notebook contains errors.
manual_results_df = DataFrame(map(enumerate(collect(updated_manual_results_dict))) do (i,(filename, results))
		
		(;
			map(zip(manual, results)) do (action, result)
				Symbol(displayname(action)) => result
			end...,
			
			autograde_results_df[1,:]...,
		)
	end)
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---
Error message
Another cell defining inspected_notebook_index_str and inspected_notebook contains errors.
DownloadButton(sprint(CSV.write, manual_results_df), "manual_results.csv")
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---
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67.0 μs
Error message
Another cell defining inspected_notebook_index_str and inspected_notebook contains errors.
# reactively add the result to our Dict
updated_manual_results_dict = let
	if inspected_manual_results !== missing
		manual_results_dict[inspected_notebook_index] = inspected_manual_results
	end
	manual_results_dict
end
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---
Error message
Another cell defining inspected_notebook_index_str contains errors.
inspected_notebook_index = parse(Int, inspected_notebook_index_str)
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---
Error message
Another cell defining inspected_notebook_index_str contains errors.
Be patient :)
inspected_notebook = notebooks[inspected_notebook_index]
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---
Appendix


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165 μs
Grading actions


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162 μs
abstract type GradingAction end
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346 μs
struct AutoTestAction <: GradingAction
	name
	points_value::Number
	test::Expr
end
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1.4 ms
struct GetValue <: GradingAction
	name
	getter::Expr
end
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1.2 ms
ManualScoreAction
begin
	struct ManualScoreAction <: GradingAction
		name
		points_value::Number
		rubric
	end
	ManualScoreAction(name, points_value) = ManualScoreAction(name, points_valie, name)
end
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1.6 ms
ManualCheckAction
begin
	struct ManualCheckAction <: GradingAction
		name
		points_value::Number
		rubric
	end
	ManualCheckAction(name, points_value) = ManualCheckAction(name, points_valie, name)
end
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1.6 ms
do_action (generic function with 2 methods)
begin
	function do_action(notebook::Pluto.Notebook, action::AutoTestAction)
		tester = quote
				try
					$(action.test)
				catch
					false
				end
			end
		
		if eval_in_notebook(notebook, tester) === true
			action.points_value
		else
			zero(action.points_value)
		end
	end
	
	function do_action(notebook::Pluto.Notebook, action::GetValue)
		eval_in_notebook(notebook, action.getter)
	end
end
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1.1 ms
displayname (generic function with 1 method)
begin
	
	
	# default
	displayname(action::GradingAction) = action.name
end
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388 μs
Misc


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175 μs
eval_in_notebook (generic function with 1 method)
function eval_in_notebook(notebook::Pluto.Notebook, expr)
	ws = Pluto.WorkspaceManager.get_workspace((pluto_session, notebook))
	fetcher = :(Core.eval($(ws.module_name), $(expr |> QuoteNode)))
	Distributed.remotecall_eval(Main, ws.pid, fetcher)
end
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745 μs
Not used


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161 μs
struct GradedStudent
	name
	email
	grader
end
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874 μs
""
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10.6 μs
Error message
MethodError: no method matching Main.workspace#3.GradedStudent(::SubString{String})
Closest candidates are:
  Main.workspace#3.GradedStudent(::Any, ::Any, ::Any) at ~/work/disorganised-mess/disorganised-mess/autograding/updated.jl#==#0796b462-f85c-11ea-1bf2-53ad24ec447c:2
Stack trace
Here is what happened, the most recent locations are first:
  1. anonymous function 
     from This cell: line 2
    graders = map(split(graders_raw, '\n')) do line	GradedStudent(split(line, '\t')...)end
  2. Show more...
Silly computer!
graders = map(split(graders_raw, '\n')) do line
	GradedStudent(split(line, '\t')...)
end
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---