fix(curriculum): convert all video challenges to markdown (#39189)

curriculum/challenges/english/08-data-analysis-with-python/numpy/accessing-and-changing-elements,-rows,-columns.english.md

@@ -7,16 +7,18 @@ videoId: v-7Y7koJ_N0
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What code would change the values in the 3rd column of both of the following Numpy arrays to 20?:
+    What code would change the values in the 3rd column of both of the following Numpy arrays to 20?
 
     ```py
     a = np.array([[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]])
@@ -27,15 +29,22 @@ question:
     ```
   answers:
     - |
-      `a[:, 3] = 20`
+      ```python
+      a[:, 3] = 20
+      ```
     - |
-      `a[2, :] = 20`
+      ```python
+      a[2, :] = 20
+      ```
     - |
-      `a[:, 2] = 20`
+      ```python
+      a[:, 2] = 20
+      ```
     - |
-      `a[1, 2] = 20`
+      ```python
+      a[1, 2] = 20
+      ```
   solution: 3
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/basics-of-numpy.english.md

@@ -7,21 +7,41 @@ videoId: f9QrZrKQMLI
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
-  text: 'What will the following code print?:<pre>b = np.array([[1.0,2.0,3.0],[3.0,4.0,5.0]])<br>print(b)</pre>'
+  text: |
+    What will the following code print?
+
+    ```python
+    b = np.array([[1.0,2.0,3.0],[3.0,4.0,5.0]])
+    print(b)
+    ```
   answers:
-    - '<pre>[[1.0 2.0 3.0]<br>[3.0 4.0 5.0]]<pre>'
-    - '<pre>[[1. 2. 3.]<br>[3. 4. 5.]]<pre>'
-    - '<pre>[[1. 3.]<br>[2. 4.]<br>[3. 5.]<pre>'
+    - |
+      ```python
+      [[1.0 2.0 3.0]
+      [3.0 4.0 5.0]]
+      ```
+    - |
+      ```python
+      [[1. 2. 3.]
+      [3. 4. 5.]]
+      ```
+    - |
+      ```python
+      [[1. 3.]
+      [2. 4.]
+      [3. 5.]
+      ```
   solution: 2
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/copying-arrays-warning.english.md

@@ -7,16 +7,18 @@ videoId: iIoQ0_L0GvA
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What is the value of `a` after running the following code?:
+    What is the value of `a` after running the following code?
 
     ```py
     import numpy as np
@@ -28,13 +30,18 @@ question:
 
   answers:
     - |
-      `[1 2 3 4 5]`
+      ```python
+      [1 2 3 4 5]
+      ```
     - |
-      `[1 2 20 4 5]`
+      ```python
+      [1 2 20 4 5]
+      ```
     - |
-      `[1 20 3 4 5]`
+      ```python
+      [1 20 3 4 5]
+      ```
   solution: 2
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/initialize-array-problem.english.md

@@ -7,18 +7,20 @@ videoId: 0jGfH8BPfOk
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What is another way to produce the following array?:
+    What is another way to produce the following array?
 
-    ```
+    ```py
     [[1. 1. 1. 1. 1.]
     [1. 0. 0. 0. 1.]
     [1. 0. 9. 0. 1.]
@@ -55,7 +57,6 @@ question:
       output[4:1, 4:1] = z
       ```
   solution: 1
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/initializing-different-arrays.english.md

@@ -7,16 +7,18 @@ videoId: CEykdsKT4U4
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What will the following code print?:
+    What will the following code print?
 
     ```py
     a = np.array([[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]])
@@ -25,21 +27,20 @@ question:
     ```
   answers:
     - |
-      ```
+      ```py
       [[100 100 100 100 100]]
       ```
     - |
-      ```
+      ```py
       [[100 100 100 100 100]
       [100 100 100 100 100]]
       ```
     - |
-      ```
+      ```py
       [[ 1  2  3  4  5]
       [ 6  7 20  9 10]]
       ```
   solution: 2
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/loading-data-and-advanced-indexing.english.md

@@ -7,13 +7,15 @@ videoId: tUdBZ7pF8Jg
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
     Given a file named `data.txt` with these contents:
@@ -23,7 +25,7 @@ question:
     15,88,5,75,22
     ```
 
-    What code would produce the following array?:
+    What code would produce the following array?
 
     ```py
     [29. 32. 45. 15.  5. 22.]
@@ -31,28 +33,27 @@ question:
 
   answers:
     - |
-      ```
+      ```py
       filedata = np.genfromtxt('data.txt', delimiter=',')
       output = np.any(filedata < 50)
 
       print(output)
       ```
     - |
-      ```
+      ```py
       filedata = np.genfromtxt('data.txt', delimiter=',')
       output = np.all(filedata < 50, axis=1)
 
       print(output)
       ```
     - |
-      ```
+      ```py
       filedata = np.genfromtxt('data.txt', delimiter=',')
       output = filedata[filedata < 50]
 
       print(output)
       ```
   solution: 3
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/mathematics.english.md

@@ -7,16 +7,18 @@ videoId: 7txegvyhtVk
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What is the value of `b` after running the following code?:
+    What is the value of `b` after running the following code?
 
     ```py
     import numpy as np
@@ -26,12 +28,23 @@ question:
     ```
 
   answers:
-    - '10'
-    - '7'
-    - '5'
-    - '15'
+    - |
+      ```py
+      10
+      ```
+    - |
+      ```py
+      7
+      ```
+    - |
+      ```py
+      5
+      ```
+    - |
+      ```py
+      15
+      ```
   solution: 4
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/reorganizing-arrays.english.md

@@ -7,18 +7,20 @@ videoId: VNWAQbEM-C8
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
-```yml
+````yml
 question:
   text: |
-    What code would produce the following array?:
+    What code would produce the following array?
 
-    ```
+    ```py
     [[1. 1.]
     [1. 1.]
     [1. 1.]
@@ -44,7 +46,6 @@ question:
       print(b)
       ```
   solution: 1
-```
+````
 
 </section>
-

curriculum/challenges/english/08-data-analysis-with-python/numpy/what-is-numpy.english.md

@@ -7,22 +7,29 @@ videoId: 5Nwfs5Ej85Q
 ---
 
 ## Description
+
 <section id='description'>
 </section>
 
 ## Tests
+
 <section id='tests'>
 
 ```yml
 question:
-  text: 'Why are Numpy arrays faster than regular Python lists?:'
+  text: |
+    Why are Numpy arrays faster than regular Python lists?
+
   answers:
-    - Numpy does not perform type checking while iterating through objects.
-    - Numpy uses fixed types.
-    - Numpy uses contiguous memory.
-    - All of the above.
+    - |
+      Numpy does not perform type checking while iterating through objects.
+    - |
+      Numpy uses fixed types.
+    - |
+      Numpy uses contiguous memory.
+    - |
+      All of the above.
   solution: 4
 ```
 
 </section>
-