feat(curriculum): New steps to teach lists

curriculum/challenges/_meta/learn-lambda-functions-by-building-an-expense-tracker/meta.json

@@ -8,180 +8,212 @@
   "superBlock": "scientific-computing-with-python",
   "challengeOrder": [
     {
-      "id": "658212ba98182f3e855e85f9",
+      "id": "66694bfa435cef241f6f9a68",
       "title": "Step 1"
     },
     {
-      "id": "65821c1c40ccac44adf38e6b",
+      "id": "66694eaaeb7d253049fa7883",
       "title": "Step 2"
     },
     {
-      "id": "65821fcc010c3245718f2a06",
+      "id": "66694fc4bba24f33ca01fa5b",
       "title": "Step 3"
     },
     {
-      "id": "65822308ded1ba4632f66aa3",
+      "id": "666951d2e4b27e3a3c72ca5f",
       "title": "Step 4"
     },
     {
-      "id": "658225d560369446ece5518b",
+      "id": "6669539c1379793f9cb8917c",
       "title": "Step 5"
     },
     {
-      "id": "6582267ef39f5047411c1743",
+      "id": "666aae6a5d30a71f1fd7749f",
       "title": "Step 6"
     },
     {
-      "id": "65822773f4c60a479ec89f66",
+      "id": "666ab82c874add3c95145213",
       "title": "Step 7"
     },
     {
-      "id": "65822934c8a0454803e3ef12",
+      "id": "666ab9013cd5563f2b39947a",
       "title": "Step 8"
     },
     {
-      "id": "65822bd82d708c4895080c35",
+      "id": "658212ba98182f3e855e85f9",
       "title": "Step 9"
     },
     {
-      "id": "65823040bdb32949d4c1a96f",
+      "id": "65821c1c40ccac44adf38e6b",
       "title": "Step 10"
     },
     {
-      "id": "6582324b5d37fe4b622bc3c0",
+      "id": "65821fcc010c3245718f2a06",
       "title": "Step 11"
     },
     {
-      "id": "6582352cbdbcde4d0c4f7b0b",
+      "id": "65822308ded1ba4632f66aa3",
       "title": "Step 12"
     },
     {
-      "id": "65823634a308cb4d6bcc5fa6",
+      "id": "658225d560369446ece5518b",
       "title": "Step 13"
     },
     {
-      "id": "66314f2add0a8b57da5d6d91",
+      "id": "6582267ef39f5047411c1743",
       "title": "Step 14"
     },
     {
-      "id": "658238f7604f154ea9a23e1e",
+      "id": "65822773f4c60a479ec89f66",
       "title": "Step 15"
     },
     {
-      "id": "65823b0167fd894f4a7ea60a",
+      "id": "65822934c8a0454803e3ef12",
       "title": "Step 16"
     },
     {
-      "id": "65823bbbdb4eaa4f9d20a0fb",
+      "id": "65822bd82d708c4895080c35",
       "title": "Step 17"
     },
     {
-      "id": "65823cfc74aa564ffc460489",
+      "id": "65823040bdb32949d4c1a96f",
       "title": "Step 18"
     },
     {
-      "id": "65823dde36392f505a39f7c7",
+      "id": "6582324b5d37fe4b622bc3c0",
       "title": "Step 19"
     },
     {
-      "id": "65823e87c9741750a22085a7",
+      "id": "6582352cbdbcde4d0c4f7b0b",
       "title": "Step 20"
     },
     {
-      "id": "65823ff0d4b991510fade1a8",
+      "id": "65823634a308cb4d6bcc5fa6",
       "title": "Step 21"
     },
     {
-      "id": "65824111a09164518320088d",
+      "id": "66314f2add0a8b57da5d6d91",
       "title": "Step 22"
     },
     {
-      "id": "658244fdf4b0265334711664",
+      "id": "658238f7604f154ea9a23e1e",
       "title": "Step 23"
     },
     {
-      "id": "65824561f3478e5371a33ae5",
+      "id": "65823b0167fd894f4a7ea60a",
       "title": "Step 24"
     },
     {
-      "id": "658246c28575d653d1f89b59",
+      "id": "65823bbbdb4eaa4f9d20a0fb",
       "title": "Step 25"
     },
     {
-      "id": "65824872894f59546e3084e2",
+      "id": "65823cfc74aa564ffc460489",
       "title": "Step 26"
     },
     {
-      "id": "65824a1b16631c54fa524154",
+      "id": "65823dde36392f505a39f7c7",
       "title": "Step 27"
     },
     {
-      "id": "65824c7b4e2da85597693dcf",
+      "id": "65823e87c9741750a22085a7",
       "title": "Step 28"
     },
     {
-      "id": "65824dfdb6815d563b2d3256",
+      "id": "65823ff0d4b991510fade1a8",
       "title": "Step 29"
     },
     {
-      "id": "6582507654b3ed5712341382",
+      "id": "65824111a09164518320088d",
       "title": "Step 30"
     },
     {
-      "id": "658252f6b1526d57b103d48a",
+      "id": "658244fdf4b0265334711664",
       "title": "Step 31"
     },
     {
-      "id": "658254db6e12485a48130f57",
+      "id": "65824561f3478e5371a33ae5",
       "title": "Step 32"
     },
     {
-      "id": "658255d5f955175b270f251d",
+      "id": "658246c28575d653d1f89b59",
       "title": "Step 33"
     },
     {
-      "id": "6582575b8089f85b8b92d7c8",
+      "id": "65824872894f59546e3084e2",
       "title": "Step 34"
     },
     {
-      "id": "658258c0e5fbe85c14c060cf",
+      "id": "65824a1b16631c54fa524154",
       "title": "Step 35"
     },
     {
-      "id": "65825a9520a0795c8afbef50",
+      "id": "65824c7b4e2da85597693dcf",
       "title": "Step 36"
     },
     {
-      "id": "65825b758fe85a5cebabc8c5",
+      "id": "65824dfdb6815d563b2d3256",
       "title": "Step 37"
     },
     {
-      "id": "65825cda2668995d5168e37c",
+      "id": "6582507654b3ed5712341382",
       "title": "Step 38"
     },
     {
-      "id": "65825e96b5db5f5dee6bf57c",
+      "id": "658252f6b1526d57b103d48a",
       "title": "Step 39"
     },
     {
-      "id": "6582601b2987045e8e7da994",
+      "id": "658254db6e12485a48130f57",
       "title": "Step 40"
     },
     {
-      "id": "6582622cb6c11a5f4c5d79b4",
+      "id": "658255d5f955175b270f251d",
       "title": "Step 41"
     },
     {
-      "id": "6582687859366a618424d84b",
+      "id": "6582575b8089f85b8b92d7c8",
       "title": "Step 42"
     },
     {
-      "id": "65826a6e9d189a623141c726",
+      "id": "658258c0e5fbe85c14c060cf",
       "title": "Step 43"
     },
     {
-      "id": "65826af5b226a5628aa154b1",
+      "id": "65825a9520a0795c8afbef50",
       "title": "Step 44"
+    },
+    {
+      "id": "65825b758fe85a5cebabc8c5",
+      "title": "Step 45"
+    },
+    {
+      "id": "65825cda2668995d5168e37c",
+      "title": "Step 46"
+    },
+    {
+      "id": "65825e96b5db5f5dee6bf57c",
+      "title": "Step 47"
+    },
+    {
+      "id": "6582601b2987045e8e7da994",
+      "title": "Step 48"
+    },
+    {
+      "id": "6582622cb6c11a5f4c5d79b4",
+      "title": "Step 49"
+    },
+    {
+      "id": "6582687859366a618424d84b",
+      "title": "Step 50"
+    },
+    {
+      "id": "65826a6e9d189a623141c726",
+      "title": "Step 51"
+    },
+    {
+      "id": "65826af5b226a5628aa154b1",
+      "title": "Step 52"
     }
   ],
   "helpCategory": "Python"

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/658212ba98182f3e855e85f9.md

@@ -1,8 +1,8 @@
 ---
 id: 658212ba98182f3e855e85f9
-title: Step 1
+title: Step 9
 challengeType: 20
-dashedName: step-1
+dashedName: step-9
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65821c1c40ccac44adf38e6b.md

@@ -1,19 +1,13 @@
 ---
 id: 65821c1c40ccac44adf38e6b
-title: Step 2
+title: Step 10
 challengeType: 20
-dashedName: step-2
+dashedName: step-10
 ---
 
 # --description--
 
-A list in Python is a built-in data type that allows you to store many items in a single data structure. In Python, you create a list by putting items inside square brackets (`[]`), with each item separated from the following one by a comma.
-
-```py
-numbers = [1, 2, 3, 4]
-```
-
-Use a pair of square brackets to create an empty list named `expenses`. You will use it to store each of your expenses.
+Create an empty list named `expenses`. You will use it to store each of your expenses.
 
 # --hints--
 

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65821fcc010c3245718f2a06.md

@@ -1,22 +1,15 @@
 ---
 id: 65821fcc010c3245718f2a06
-title: Step 3
+title: Step 11
 challengeType: 20
-dashedName: step-3
+dashedName: step-11
 ---
 
 # --description--
 
-The `expenses` parameter of your `add_expense` function will be a list of expenses. You want to be able to add items at the end of your list. For that you'll use the `.append()` list method:
+The `expenses` parameter of your `add_expense` function will be a list of expenses. You want to be able to add items at the end of your list. For that you'll use the `.append()` list method.
 
-```py
-my_list = [2, 4, 7]
-my_list.append(3)
-```
-
-In the example above, after appending `3`, `my_list` would be `[2, 4, 7, 3]`.
-
-Replace `pass` with a call to the `.append()` method on the `expenses` list. Don't pass any arguments to `.append()` for now.
+Add a call to the `.append()` method on the `expenses` list. Don't pass any arguments to `.append()` for now.
 
 # --hints--
 

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65822308ded1ba4632f66aa3.md

@@ -1,8 +1,8 @@
 ---
 id: 65822308ded1ba4632f66aa3
-title: Step 4
+title: Step 12
 challengeType: 20
-dashedName: step-4
+dashedName: step-12
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/658225d560369446ece5518b.md

@@ -1,8 +1,8 @@
 ---
 id: 658225d560369446ece5518b
-title: Step 5
+title: Step 13
 challengeType: 20
-dashedName: step-5
+dashedName: step-13
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/6582267ef39f5047411c1743.md

@@ -1,8 +1,8 @@
 ---
 id: 6582267ef39f5047411c1743
-title: Step 6
+title: Step 14
 challengeType: 20
-dashedName: step-6
+dashedName: step-14
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65822773f4c60a479ec89f66.md

@@ -1,8 +1,8 @@
 ---
 id: 65822773f4c60a479ec89f66
-title: Step 7
+title: Step 15
 challengeType: 20
-dashedName: step-7
+dashedName: step-15
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65822934c8a0454803e3ef12.md

@@ -1,8 +1,8 @@
 ---
 id: 65822934c8a0454803e3ef12
-title: Step 8
+title: Step 16
 challengeType: 20
-dashedName: step-8
+dashedName: step-16
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65822bd82d708c4895080c35.md

@@ -1,8 +1,8 @@
 ---
 id: 65822bd82d708c4895080c35
-title: Step 9
+title: Step 17
 challengeType: 20
-dashedName: step-9
+dashedName: step-17
 ---
 
 # --description--

curriculum/challenges/english/07-scientific-computing-with-python/learn-lambda-functions-by-building-an-expense-tracker/65823040bdb32949d4c1a96f.md

@@ -1,8 +1,8 @@
 ---
 id: 65823040bdb32949d4c1a96f
-title: Step 10
+title: Step 18
 challengeType: 20
-dashedName: step-10
+dashedName: step-18
 ---
 
 # --description--