diff --git a/snippet_data/snippetList.json b/snippet_data/snippetList.json
index 0cf2ef368..3f14fbba7 100644
--- a/snippet_data/snippetList.json
+++ b/snippet_data/snippetList.json
@@ -482,14 +482,14 @@
       "type": "snippetListing",
       "title": "filter_non_unique",
       "attributes": {
-        "text": "Filters out the non-unique values in a list.\n\nUse list comprehension and `list.count()` to create a list containing only the unique values.\n\n",
+        "text": "Filters out the non-unique values in a list.\n\nUse a `Counter` to get the count of each value in the list.\nUse list comprehension to create a list containing only the unique values.\n\n",
         "tags": [
           "list",
           "beginner"
         ]
       },
       "meta": {
-        "hash": "05679ae115d276830ec769a04b0800d92eabc6a09678fc1a9cf6013c813cc650"
+        "hash": "cc048906b1a368428244af8202aeb3a60b1b7b7bf52ad744e92d3e21f6be95f2"
       }
     },
     {
@@ -497,14 +497,14 @@
       "type": "snippetListing",
       "title": "filter_unique",
       "attributes": {
-        "text": "Filters out the unique values in a list.\n\nUse list comprehension and `list.count()` to create a list containing only the non-unique values.\n\n",
+        "text": "Filters out the unique values in a list.\n\nUse a `Counter` to get the count of each value in the list.\nUse list comprehension to create a list containing only the non-unique values.\n\n",
         "tags": [
           "list",
           "beginner"
         ]
       },
       "meta": {
-        "hash": "174c62134c81e139aa9d0b31f46c684b5edd4c52e721136d586d435058e19288"
+        "hash": "f3e5cada914ae863ca9cf8fd8780b1634ea526d78f1f542c5c7577f6dd685cfc"
       }
     },
     {
diff --git a/snippet_data/snippets.json b/snippet_data/snippets.json
index 18fa81cc8..c6dda92de 100644
--- a/snippet_data/snippets.json
+++ b/snippet_data/snippets.json
@@ -762,9 +762,9 @@
       "type": "snippet",
       "attributes": {
         "fileName": "filter_non_unique.md",
-        "text": "Filters out the non-unique values in a list.\n\nUse list comprehension and `list.count()` to create a list containing only the unique values.\n\n",
+        "text": "Filters out the non-unique values in a list.\n\nUse a `Counter` to get the count of each value in the list.\nUse list comprehension to create a list containing only the unique values.\n\n",
         "codeBlocks": {
-          "code": "def filter_non_unique(lst):\n  return [item for item in lst if lst.count(item) == 1]",
+          "code": "from collections import Counter\n\ndef filter_non_unique(lst):\n  return [item for item, count in counter = Counter(lst).items() if count == 1]",
           "example": "filter_non_unique([1, 2, 2, 3, 4, 4, 5]) # [1, 3, 5]"
         },
         "tags": [
@@ -773,11 +773,11 @@
         ]
       },
       "meta": {
-        "hash": "05679ae115d276830ec769a04b0800d92eabc6a09678fc1a9cf6013c813cc650",
+        "hash": "cc048906b1a368428244af8202aeb3a60b1b7b7bf52ad744e92d3e21f6be95f2",
         "firstSeen": "1566296031",
-        "lastUpdated": "1566296031",
-        "updateCount": 2,
-        "authorCount": 2
+        "lastUpdated": "1578227946",
+        "updateCount": 4,
+        "authorCount": 3
       }
     },
     {
@@ -786,9 +786,9 @@
       "type": "snippet",
       "attributes": {
         "fileName": "filter_unique.md",
-        "text": "Filters out the unique values in a list.\n\nUse list comprehension and `list.count()` to create a list containing only the non-unique values.\n\n",
+        "text": "Filters out the unique values in a list.\n\nUse a `Counter` to get the count of each value in the list.\nUse list comprehension to create a list containing only the non-unique values.\n\n",
         "codeBlocks": {
-          "code": "def filter_unique(lst):\n  return [x for x in set(item for item in lst if lst.count(item) > 1)]",
+          "code": "from collections import Counter\n\ndef filter_unique(lst):\n  return [item for item, count in Counter(lst).items() if count > 1]",
           "example": "filter_unique([1, 2, 2, 3, 4, 4, 5]) # [2, 4]"
         },
         "tags": [
@@ -797,11 +797,11 @@
         ]
       },
       "meta": {
-        "hash": "174c62134c81e139aa9d0b31f46c684b5edd4c52e721136d586d435058e19288",
+        "hash": "f3e5cada914ae863ca9cf8fd8780b1634ea526d78f1f542c5c7577f6dd685cfc",
         "firstSeen": "1570035984",
-        "lastUpdated": "1570516752",
-        "updateCount": 4,
-        "authorCount": 3
+        "lastUpdated": "1578227961",
+        "updateCount": 7,
+        "authorCount": 4
       }
     },
     {