Merge branch 'enh/virtual_mini_pytreat_intro_purple_monkey_dishwasher' into 'master'

virtual mini pytreat intro

See merge request !23

talks/virtual_intro/data/2d_array.txt

+% The purpose of this comment is purely
+% to make life difficult for you. Sorry
+% about that. I'm not really sorry.
+128.3 100.8  67.2 120.1 150.2  53.0  64.2 139.3  46.7 118.1 125.8 153.1  83.2 115.9   3.4 126.3  92.2 104.7 131.2  29.3
+ 89.3 118.8 119.2  80.1 121.2  35.0  66.2 153.3  43.7 102.1 147.8 160.1  94.2 140.9  70.4 124.3 124.2  93.7 100.2  32.3
+ 91.3 146.8 137.2 129.1 157.2 -22.0  75.2  90.3  33.7  86.1  74.8  90.1 114.2  81.9  72.4 135.3  85.2 102.7  58.2  55.3
+ 75.3  87.8  84.2 112.1 131.2  57.0 150.2  73.3  41.7 110.1  78.8 102.1 116.2 134.9  34.4  74.3 150.2  52.7  89.2  21.3
+ 79.3  83.8  78.2 103.1  96.2  26.0 151.2 122.3  46.7 113.1 143.8  80.1  61.2 136.9   8.4  94.3  76.2 123.7 150.2  10.3
+ 93.3 157.8 154.2  79.1 155.2   8.0  63.2 120.3  12.7 130.1 105.8 111.1  66.2  99.9  54.4 120.3 113.2 128.7 110.2  46.3
+111.3 126.8  65.2  90.1 101.2  36.0 116.2 139.3  36.7  91.1  88.8  94.1  90.2  92.9  -0.6  46.3  80.2 105.7  88.2 -11.7
+149.3 119.8 134.2 124.1  89.2  21.0 133.2 113.3  28.7 139.1 136.8  82.1 141.2  90.9  11.4  97.3 109.2 137.7 120.2  32.3
+141.3 149.8 115.2 115.1 105.2  51.0  77.2 130.3  -4.3 124.1 141.8 162.1  95.2 130.9 -10.6 114.3 132.2 134.7  79.2  69.3
+141.3  77.8 135.2 167.1 103.2  55.0 153.2  68.3  33.7 136.1 125.8  85.1 148.2 114.9  76.4  57.3 147.2 125.7 153.2  45.3

talks/virtual_intro/data/comma_separated.txt

+13,7,3,18,15,3,12,11,9,9
+13,1,7,17,16,13,18,9,18,6
+9,19,16,3,18,3,19,12,9,6
+2,11,6,12,2,11,15,9,3,9
+2,12,1,7,4,3,6,6,2,4
+10,8,14,1,17,19,8,19,2,9
+18,14,2,11,17,14,6,16,14,18
+6,8,13,16,11,17,16,5,16,15
+6,5,4,18,6,14,19,8,4,15
+15,17,12,10,17,12,5,9,18,6

talks/virtual_intro/data/file.txt

+Congratulations, you have read your first file from Python!

talks/virtual_intro/data/space_separated.txt

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+7 17
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