Fix crossed-out code

Author: macdems

.vscode/settings.json

@@ -11,5 +11,9 @@
         "editor.wordWrapColumn": 132,
         "editor.wordWrap": "bounded",
         "editor.quickSuggestions": false
-    }
+    },
+    "emmet.includeLanguages":{
+        "jekyll": "html",
+        "scss": "css"
+      }
 }

.vscode/tasks.json

@@ -0,0 +1,83 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Build Jekyll",
+      "type": "shell",
+      "command": "bundle exec jekyll build",
+      "problemMatcher": [
+        {
+          "severity": "warning",
+          "fileLocation": "relative",
+          "pattern": {
+            "regexp": "^\\s*Liquid Warning: Liquid (?:syntax )?error \\(line (\\d+)\\): (.+) in (.+)$",
+            "line": 1,
+            "message": 2,
+            "file": 3
+          }
+        },
+        {
+          "severity": "error",
+          "fileLocation": "relative",
+          "pattern": {
+            "regexp": "^\\s*Liquid Exception: Liquid (?:syntax )?error \\(line (\\d+)\\): (.+) in (.+)$",
+            "line": 1,
+            "message": 2,
+            "file": 3
+          }
+        }
+      ],
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      }
+    },    
+    {
+      "label": "Run Jekyll",
+      "type": "shell",
+      "command": "bundle exec jekyll serve",
+      "problemMatcher": [
+        {
+          "owner": "jekyll-warning",
+          "severity": "warning",
+          "fileLocation": "relative",
+          "pattern": {
+            "regexp": "^\\s*Liquid Warning: Liquid (?:syntax )?error \\(line (\\d+)\\): (.+) in (.+)$",
+            "line": 1,
+            "message": 2,
+            "file": 3
+          },
+          "background": {
+            "activeOnStart": true,
+            "beginsPattern": "^\\s*Regenerating: ",
+            "endsPattern": "^\\s*(?:\\.\\.\\.)?done in "
+          }
+        },
+        {
+          "owner": "jekyll-error",
+          "severity": "error",
+          "fileLocation": "relative",
+          "pattern": {
+            "regexp": "^\\s*Liquid Exception: Liquid (?:syntax )?error \\(line (\\d+)\\): (.+) in (.+)$",
+            "line": 1,
+            "message": 2,
+            "file": 3
+          },
+          "background": {
+            "activeOnStart": true,
+            "beginsPattern": "^\\s*Regenerating: ",
+            "endsPattern": "^\\s*(?:\\.\\.\\.)?done in "
+          }
+        }
+      ],
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      }
+    }
+  ]
+}

04 More on Variables/5 Two remarks about iteration over sequences Item numbering in a loop.md

@@ -10,7 +10,7 @@ nav_order:  5
 
 Sometimes there is a need to iterate through the sequence of a set and number them simultaneously. This can be done as follows:
 
-<div style="text-decoration: line-through;" onmouseover="this.style.textDecoration='none'" onmouseout="this.style.textDecoration='line-through'">
+<div style="text-decoration: line-through;" onmouseover="this.style.textDecoration='none'" onmouseout="this.style.textDecoration='line-through'" markdown="1">
 
 ```python
 number = 0

08 File Operations/1 Opening files.md

@@ -26,7 +26,7 @@ Additionally, we can add a `b` character to the selected mode. It means opening
 
 The function `open` returns a variable of the file type , which is a special type used to interact with an open file (it will be discussed in detail in the next part of the lecture). After reading/writing data is completed, the file should be *closed*. It is necessary especially in the case of writing, because otherwise we have no guarantee that the data will be actually written to the disk (to increase the performance, Python and the operating system use *caching*: the content of the file is stored in the operating memory and only when it is closed, it is actually written to disk). To close the file, use the method `file.close()`. E.g:
 
-<div style="text-decoration: line-through;" onmouseover="this.style.textDecoration='none'" onmouseout="this.style.textDecoration='line-through'">
+<div style="text-decoration: line-through;" onmouseover="this.style.textDecoration='none'" onmouseout="this.style.textDecoration='line-through'" markdown="1">
 
 ```python
 file = open ('data.txt', 'w')

_config.yml

@@ -8,6 +8,8 @@ url: https://mds-python.github.io/
 remote_theme: pmarsceill/just-the-docs
 color_scheme: tul
 
+markdown: kramdown
+
 plugins:
   - jekyll-relative-links