christianp

class NegativeStep(Exception):
    pass

def countdown(n,step=0):
    if n==0:
        return [0]
    if n<0:
        raise NegativeStep()
        
    for d in range(-1,2):

christianp

Instructions

• Put seb_show_headers.patch in your numbas-lti-provider directory.
• Run git apply seb_show_headers.patch.
• Run supervisorctl restart numbas_lti:

When you launch a Numbas exam through SEB, the "Not launched by Safe Exam Browser" page will show you the page's URI, all request headers, and all GET and POST data.

There should be a header called X-Safeexambrowser-Configkeyhash which is the sha-256 created by concatenating the request URI and the SEB config key.

christianp

\newcommand{\clp}{Christian Lawson-Perfect}
\newcommand{\twopi}{2\pi}

christianp

# The other set of rules, implemented at https://codepen.io/xenohunter/full/GRpaKjR
# You can flip any three adjacent lights.
def find_all_states_12_lamps(num_lights):

    reachable = set()

    # Sets of lights that can be changed simultaneously
    change_sets = [((i+num_lights-1)%num_lights, i, (i+1)%num_lights) for i in range(num_lights)]

    queue = [tuple([True]+[False]*(num_lights-1))]

christianp

christianp

import data.nat.choose
import data.finset
import algebra.big_operators.basic

open finset

open_locale big_operators

/- The Christmas stocking theorem:
 - If you start at any point on the edge of the binomial coefficients triangle and 

christianp

"""
Get the order of questions shown in each attempt of a Numbas LTI attempt data dump.
Prints a CSV file, with a header row and a row for each attempt.
The first column is the ID of the attempt, and subsequent columns represent each of the questions, in the order they appear in the editor. The value in the column for a particular question gives the index at which that question appeared in that attempt.
"""

import sys
import csv
import json

christianp

let(
middle, point(3/2,3/2),
t, point(0,1)..point(2,1)..point(2,0),
t2, point(0,1)..point(2,0)..point(0,0),
colors, qualitative_color_schemes(5)[0],

eukleides("A 3×3 grid of squares. The middle square is filled in, and the 2×1 rectangles around it each have half filled in. The filled-in shapes together make a square whose corners touch the edges of the grid.",
[
  map(x filled color, [x,color], zip(iterate(rotate(tri,middle,deg(90)),tri,t,3), colors))
, map(x filled color opacity(0.3), [x,color], zip(iterate(rotate(tri,middle,deg(90)),tri,t2,3), colors))

christianp

This patch applies on top of the mathstodon branch maintained by christianp. It's only useful if you have something rendering LaTeX inside status content. The mathstodon branch uses MathJax for this.

You need a copy of MathJax 3 in the folder public/MathJax.

christianp