diff --git a/00-before-we-start.html b/00-before-we-start.html
index 7489b9f03..81fc9d3d1 100644
--- a/00-before-we-start.html
+++ b/00-before-we-start.html
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   "dateCreated": "2015-03-19",
   "dateModified": "2024-02-21",
-  "datePublished": "2024-03-26"
+  "datePublished": "2024-03-29"
 }
 
   </script><script>
diff --git a/01-short-introduction-to-Python.html b/01-short-introduction-to-Python.html
index b5c392b0b..49efe468b 100644
--- a/01-short-introduction-to-Python.html
+++ b/01-short-introduction-to-Python.html
@@ -718,7 +718,7 @@ <h3 class="callout-title">Tuples<em>vs.</em>Lists<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>What happens when you execute <code>a_list[1] = 5</code>?</li>
 </ol><p>The second value in <code>a_list</code> is replaced with
@@ -880,7 +880,7 @@ <h3 class="callout-title">Changing dictionaries<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
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@@ -1011,7 +1011,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
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diff --git a/02-starting-with-data.html b/02-starting-with-data.html
index 1f7abcda9..3c77590db 100644
--- a/02-starting-with-data.html
+++ b/02-starting-with-data.html
@@ -695,7 +695,7 @@ <h3 class="callout-title">Challenge - DataFrames<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <code>surveys_df.columns</code> provides the names of the columns in
@@ -782,7 +782,7 @@ <h3 class="callout-title">Challenge - Statistics<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
 </ol><ul><li>How many unique sites are in the data? <code>site_names.size</code>
@@ -906,7 +906,7 @@ <h3 class="callout-title">Challenge - Summary Data<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>The first column of output from <code>grouped_data.describe()</code>
 (count) tells us that the data contains 15690 records for female
@@ -1005,7 +1005,7 @@ <h3 class="callout-title">Challenge - Make a list<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
@@ -1128,7 +1128,7 @@ <h3 class="callout-title">Challenge - Plots<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
 </ol><figure><img src="fig/01_chall_bar_meanweight.png" alt="average weight across all species for each plot" class="figure mx-auto d-block"></figure><ol start="2" style="list-style-type: decimal"><li><code>surveys_df.groupby('sex').count()["record_id"].plot(kind='bar')</code></li>
@@ -1190,7 +1190,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Solution to Summary Challenge</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
@@ -1335,7 +1335,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/02-starting-with-data.html",
   "dateCreated": "2015-03-19",
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diff --git a/03-index-slice-subset.html b/03-index-slice-subset.html
index e04455901..46defffbe 100644
--- a/03-index-slice-subset.html
+++ b/03-index-slice-subset.html
@@ -517,7 +517,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p><code>a[0]</code> returns <code>1</code>, as Python starts with
 element 0 (this may be different from what you have previously
@@ -784,7 +784,7 @@ <h3 class="callout-title">Challenge - Range<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Selection Challenges</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <ul><li>
@@ -942,7 +942,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <div class="codewrapper sourceCode" id="cb32">
@@ -1133,7 +1133,7 @@ <h3 class="callout-title">Challenge - Putting it all together<a class="anchor" a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <div class="codewrapper sourceCode" id="cb47">
@@ -1250,7 +1250,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/03-index-slice-subset.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2024-02-26",
-  "datePublished": "2024-03-26"
+  "datePublished": "2024-03-29"
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diff --git a/04-data-types-and-format.html b/04-data-types-and-format.html
index 1ec4ef2ee..ad4cd6da6 100644
--- a/04-data-types-and-format.html
+++ b/04-data-types-and-format.html
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -758,7 +758,7 @@ <h3 class="callout-title">Counting<a class="anchor" aria-label="anchor" href="#c
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Hints</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The method <code>.count()</code> gives you the number of non-NaN
 observations per column. Try looking to the <code>.isna()</code>
@@ -768,7 +768,7 @@ <h4 class="accordion-header" id="headingSolution3">Hints</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb36">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -937,7 +937,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/04-data-types-and-format.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-06-05",
-  "datePublished": "2024-03-26"
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   </script><script>
diff --git a/05-merging-data.html b/05-merging-data.html
index fd8be3aa8..cf2039564 100644
--- a/05-merging-data.html
+++ b/05-merging-data.html
@@ -494,7 +494,7 @@ <h3 class="callout-title">Challenge - Combine Data<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb9">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -838,7 +838,7 @@ <h3 class="callout-title">Challenge - Distributions<a class="anchor" aria-label=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -901,7 +901,7 @@ <h3 class="callout-title">Challenge - Diversity Index<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb31">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1015,7 +1015,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/05-merging-data.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2024-02-21",
-  "datePublished": "2024-03-26"
+  "datePublished": "2024-03-29"
 }
 
   </script><script>
diff --git a/06-loops-and-functions.html b/06-loops-and-functions.html
index 64083ba38..62bafd9b0 100644
--- a/06-loops-and-functions.html
+++ b/06-loops-and-functions.html
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <div class="codewrapper sourceCode" id="cb9">
@@ -691,7 +691,7 @@ <h3 class="callout-title">Challenge - Modifying loops<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -813,7 +813,7 @@ <h3 class="callout-title">Challenge - Functions<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <p>For example, using an integer and a string:</p>
@@ -1078,7 +1078,7 @@ <h3 class="callout-title">Challenge: More functions<a class="anchor" aria-label=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1272,7 +1272,7 @@ <h3 class="callout-title">Challenge - Variables<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>
 <div class="codewrapper sourceCode" id="cb62">
@@ -1483,7 +1483,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><div class="codewrapper sourceCode" id="cb75">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1701,7 +1701,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/06-loops-and-functions.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-18",
-  "datePublished": "2024-03-26"
+  "datePublished": "2024-03-29"
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   </script><script>
diff --git a/07-visualization-ggplot-python.html b/07-visualization-ggplot-python.html
index 59c783bd0..5a2c3b4b6 100644
--- a/07-visualization-ggplot-python.html
+++ b/07-visualization-ggplot-python.html
@@ -475,7 +475,7 @@ <h3 class="callout-title">Challenge - bar chart<a class="anchor" aria-label="anc
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@@ -1042,7 +1042,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2015-03-19",
   "dateModified": "2024-02-21",
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diff --git a/08-putting-it-all-together.html b/08-putting-it-all-together.html
index 6a43f4724..f155c6a0c 100644
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   "dateCreated": "2015-03-19",
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-18",
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diff --git a/404.html b/404.html
index 9d4a25cb4..dceaf5d51 100644
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   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/404.html",
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-  "dateModified": "2024-03-26",
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index 17163caaf..fd97681d8 100644
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@@ -364,7 +364,7 @@ <h1>Contributor Code of Conduct</h1>
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
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--- a/CONTRIBUTORS.html
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   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
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+  "datePublished": "2024-03-29"
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diff --git a/LICENSE.html b/LICENSE.html
index ea07d170c..bfa322852 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -415,7 +415,7 @@ <h1>Licenses</h1>
   "identifier": "https://datacarpentry.github.io/python-ecology-lesson/LICENSE.html",
   "dateCreated": "2015-03-19",
   "dateModified": "2023-05-08",
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 </button>
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 <ol style="list-style-type: decimal">
 <li>What happens when you execute <code>a_list[1] = 5</code>?</li>
@@ -1285,7 +1285,7 @@ <h3 class="callout-title">Changing dictionaries<a class="anchor" aria-label="anc
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@@ -1798,7 +1798,7 @@ <h3 class="callout-title">Challenge - DataFrames<a class="anchor" aria-label="an
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -1890,7 +1890,7 @@ <h3 class="callout-title">Challenge - Statistics<a class="anchor" aria-label="an
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
@@ -2027,7 +2027,7 @@ <h3 class="callout-title">Challenge - Summary Data<a class="anchor" aria-label="
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <ol style="list-style-type: decimal">
 <li>The first column of output from <code>grouped_data.describe()</code>
@@ -2135,7 +2135,7 @@ <h3 class="callout-title">Challenge - Make a list<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
@@ -2262,7 +2262,7 @@ <h3 class="callout-title">Challenge - Plots<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 <ol style="list-style-type: decimal">
 <li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
@@ -2333,7 +2333,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
@@ -2645,7 +2645,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p><code>a[0]</code> returns <code>1</code>, as Python starts with
@@ -2927,7 +2927,7 @@ <h3 class="callout-title">Challenge - Range<a class="anchor" aria-label="anchor"
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 </button>
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 </button>
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@@ -3298,7 +3298,7 @@ <h3 class="callout-title">Challenge - Putting it all together<a class="anchor" a
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@@ -3690,7 +3690,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -3841,7 +3841,7 @@ <h3 class="callout-title">Counting<a class="anchor" aria-label="anchor" href="#c
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   <h4 class="accordion-header" id="headingSolution3">Hints</h4>
 </button>
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 <div class="accordion-body">
 <p>The method <code>.count()</code> gives you the number of non-NaN
 observations per column. Try looking to the <code>.isna()</code>
@@ -3851,7 +3851,7 @@ <h4 class="accordion-header" id="headingSolution3">Hints</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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@@ -4167,7 +4167,7 @@ <h3 class="callout-title">Challenge - Combine Data<a class="anchor" aria-label="
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@@ -4524,7 +4524,7 @@ <h3 class="callout-title">Challenge - Distributions<a class="anchor" aria-label=
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@@ -4594,7 +4594,7 @@ <h3 class="callout-title">Challenge - Diversity Index<a class="anchor" aria-labe
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 <ol style="list-style-type: decimal">
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 </button>
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>
@@ -5057,7 +5057,7 @@ <h3 class="callout-title">Challenge - Modifying loops<a class="anchor" aria-labe
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 </button>
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@@ -5184,7 +5184,7 @@ <h3 class="callout-title">Challenge - Functions<a class="anchor" aria-label="anc
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 <ol style="list-style-type: decimal">
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diff --git a/index.html b/index.html
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 <p>The notebook should open automatically in your browser. If it does
 not or you wish to use a different browser, open this link: <a href="https://localhost:8888" class="external-link">http://localhost:8888</a>.</p>
+<div id="leave-terminal-used-to-launch-jupyter-open" class="callout prereq">
+<div class="callout-square">
+<i class="callout-icon" data-feather="check"></i>
+</div>
+<div id="leave-terminal-used-to-launch-jupyter-open" class="callout-inner">
+<h3 class="callout-title">Leave terminal used to launch Jupyter
+open<a class="anchor" aria-label="anchor" href="#leave-terminal-used-to-launch-jupyter-open"></a>
+</h3>
+<div class="callout-content">
+<p>Jupyter depends on a server running in the background associated with
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+down the server using <kbd>CTRL</kbd>+<kbd>C</kbd> and submitting
+<kbd>y</kbd> within 5 seconds if the terminal is needed for other
+tasks.</p>
+</div>
+</div>
+</div>
 <p>For a brief introduction to Jupyter Notebooks, please consult our <a href="jupyter_notebooks.html">Introduction to Jupyter Notebooks</a>
 page.</p>
 </section></section></main><nav class="bottom-pagination mx-md-4" aria-label="Next Chapter"><!-- content for small screens --><div class="d-block d-sm-block d-md-none">
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diff --git a/instructor-notes.html b/instructor-notes.html
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-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <ol style="list-style-type: decimal"><li>
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
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 <ol style="list-style-type: decimal"><li>The first column of output from <code>grouped_data.describe()</code>
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-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
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 <p>As well as calling <code>count()</code> on the <code>record_id</code>
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 <ol style="list-style-type: decimal"><li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
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 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
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 <p>When working through the solutions to the challenges above, you could
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 <p>Referring to the challenge solution above, as we know the other
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 <p>If learners have trouble generating the output, or anything happens
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 <p>The number of individuals for each taxa in each plot per sex can be
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 <p>When teaching the challenge below, demonstrating the results in a
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@@ -512,7 +512,7 @@ <h3 class="callout-title">Challenge - bar chart<a class="anchor" aria-label="anc
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diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index eb9e7555a..b4a67ac5a 100644
--- a/instructor/LICENSE.html
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>What happens when you execute <code>a_list[1] = 5</code>?</li>
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 <div class="accordion-body">
 <p>It can help to further demonstrate the freedom the user has to define
 values to keys in a dictionary, by showing another example with a value
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 <div class="accordion-body">
 <p>Working through solutions to the challenge above can provide a good
 opportunity to recap about mutability and immutability of different
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><code>site_names = pd.unique(surveys_df["plot_id"])</code></li>
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 <div class="accordion-body">
 <p>In pandas prior to version 0.18.1 there is a bug causing
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@@ -2098,7 +2098,7 @@ <h3 class="callout-title">Challenge - Summary Data<a class="anchor" aria-label="
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 <ol style="list-style-type: decimal">
 <li>The first column of output from <code>grouped_data.describe()</code>
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 <div class="accordion-body">
 <p>As well as calling <code>count()</code> on the <code>record_id</code>
 column of the grouped DataFrame as above, an equivalent result can be
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><code>surveys_df.groupby('plot_id').mean()["weight"].plot(kind='bar')</code></li>
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 <div class="accordion-body">
 <p>First we group data by site and by sex, and then calculate a total
 for each site.</p>
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 <div class="accordion-body">
 <p>Tip: use <code>.head()</code> method throughout this lesson to keep
 your display neater for students. Encourage students to try with and
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 <ol style="list-style-type: decimal">
 <li><p><code>a[0]</code> returns <code>1</code>, as Python starts with
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 <p>When working through the solutions to the challenges above, you could
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 <div class="accordion-body">
 <p>Referring to the challenge solution above, as we know the other
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 <p>The method <code>.count()</code> gives you the number of non-NaN
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 <p>If learners have trouble generating the output, or anything happens
 with that, the folder <a href="https://github.com/datacarpentry/python-ecology-lesson/tree/main/sample_output" class="external-link"><code>sample_output</code></a>
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 <div class="accordion-body">
 <p>The number of individuals for each taxa in each plot per sex can be
 derived as well.</p>
@@ -4787,7 +4787,7 @@ <h3 class="callout-title">Challenge - Diversity Index<a class="anchor" aria-labe
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
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 <ol style="list-style-type: decimal">
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+<div id="leave-terminal-used-to-launch-jupyter-open" class="callout prereq">
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+</div>
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+<div class="callout-content">
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index cbf2c9a37..d6e95a72f 100644
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-  "datePublished": "2024-03-26"
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   "dateCreated": "2015-03-19",
-  "dateModified": "2024-03-26",
-  "datePublished": "2024-03-26"
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+  "datePublished": "2024-03-29"
 }
 
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index b4f55947d..6ef0bb180 100644
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index be62c54f4..ddb9dfef8 100644
--- a/key-points.html
+++ b/key-points.html
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index 2f0748ca8..5b1dc3be6 100644
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@@ -2,5 +2,5 @@ pandoc: 3.1.11
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index 56b1bf837..9422129d1 100644
--- a/profiles.html
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