single line pre for data analysis with python

curriculum/challenges/english/08-data-analysis-with-python/data-analysis-with-python-course/data-cleaning-introduction.md

@@ -35,21 +35,25 @@ print(s.notnull().sum())
 
 ---
 
-<pre>0     True
+<pre>
+0     True
 1     True
 2    False
 3     True
 4    False
-dtype: bool</pre>
+dtype: bool
+</pre>
 
 ---
 
-<pre>0    False
+<pre>
+0    False
 1    False
 2     True
 3    False
 4     True
-dtype: bool</pre>
+dtype: bool
+</pre>
 
 ## --video-solution--
 

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

@@ -28,27 +28,19 @@ print(a <= 3)
 
 ## --answers--
 
-```python
+<pre>[False, False, False, False, True]</pre>
-[False, False, False, False, True]
-```
 
 ---
 
-```python
+<pre>[5]</pre>
-[5]
-```
 
 ---
 
-```python
+<pre>[0, 1, 2, 3]</pre>
-[0, 1, 2, 3]
-```
 
 ---
 
-```python
+<pre>[True, True, True, True, False]</pre>
-[True, True, True, True, False]
-```
 
 ## --video-solution--
 

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

@@ -27,21 +27,15 @@ a + 20
 
 ## --answers--
 
-```python
+<pre>[20, 21, 22, 24, 24]</pre>
-[20, 21, 22, 24, 24]
-```
 
 ---
 
-```python
+<pre>[0, 1, 2, 3, 4]</pre>
-[0, 1, 2, 3, 4]
-```
 
 ---
 
-```python
+<pre>[25, 26, 27, 28, 29]</pre>
-[25, 26, 27, 28, 29]
-```
 
 ## --video-solution--
 

curriculum/challenges/english/08-data-analysis-with-python/data-analysis-with-python-course/pandas-creating-columns.md

@@ -20,11 +20,13 @@ More resources:
 
 What code would add a "Certificates per month" column to the `certificates_earned` DataFrame like the one below?
 
-<pre>      Certificates  Time (in months)  Certificates per month
+<pre>
+      Certificates  Time (in months)  Certificates per month
 Tom               8                16                    0.50
 Kris              2                 5                    0.40
 Ahmad             5                 9                    0.56
-Beau              6                12                    0.50</pre>
+Beau              6                12                    0.50
+</pre>
 
 ## --answers--
 

curriculum/challenges/english/08-data-analysis-with-python/data-analysis-with-python-course/pandas-introduction.md

@@ -33,33 +33,33 @@ print(certificates_earned)
 
 ## --answers--
 
-```
+<pre>
 Tom      8
 Kris     2
 Ahmad    5
 Beau     6
 dtype: int64
-```
+</pre>
 
 ---
 
-```
+<pre>
 Kris     2
 Ahmad    5
 Beau     6
 Tom      8
 dtype: int64
-```
+</pre>
 
 ---
 
-```
+<pre>
 Tom      8
 Kris     2
 Ahmad    5
 Beau     6
 Name: certificates_earned dtype: int64
-```
+</pre>
 
 ## --video-solution--