fix(learn): tests for python video lessons (#38600)

* fix: improve tests for video challenges

* fix: remove unused challenges + get rid of no description warning

* fix: remove non-existent challenges from meta

client/plugins/fcc-source-challenges/create-challenge-nodes.js

@@ -1,7 +1,10 @@
 const crypto = require('crypto');
 
 function createChallengeNode(challenge, reporter) {
-  if (typeof challenge.description[0] !== 'string') {
+  if (
+    typeof challenge.description[0] !== 'string' &&
+    challenge.challengeType !== 11
+  ) {
     reporter.warn(`
 
     ${challenge.title} has a description that will break things!

client/utils/challengeTypes.js

@@ -126,5 +126,9 @@ exports.helpCategory = {
   'data-analysis-with-python-projects': 'Certification Projects',
   'machine-learning-with-python': 'Certification Projects',
   'machine-learning-with-python-projects': 'Certification Projects',
-  'python-for-everybody': 'Python'
+  'python-for-everybody': 'Python',
+  tensorflow: 'Python',
+  'how-neural-networks-work': 'Python',
+  numpy: 'Python',
+  'data-analysis-with-python-course': 'Python'
 };

curriculum/challenges/_meta/lectures-python-for-everybody/meta.json

@@ -229,34 +229,6 @@
     [
       "5e7b9f6a0b6c005b0e76f097",
       "Viz C"
-    ],
-    [
-      "5e7b9f6a0b6c005b0e76f098",
-      "Viz Geodata"
-    ],
-    [
-      "5e7b9f6a0b6c005b0e76f099",
-      "Viz Gmane Model"
-    ],
-    [
-      "5e7b9f6b0b6c005b0e76f09a",
-      "Viz Gmane Spider"
-    ],
-    [
-      "5e7b9f6b0b6c005b0e76f09b",
-      "Viz Gmane Viz"
-    ],
-    [
-      "5e7b9f6b0b6c005b0e76f09c",
-      "Viz Page Rank"
-    ],
-    [
-      "5e7b9f6b0b6c005b0e76f09d",
-      "Viz Page Spider"
-    ],
-    [
-      "5e7b9f6c0b6c005b0e76f09e",
-      "Viz Page Viz"
     ]
   ]
 }

curriculum/challenges/english/07-scientific-computing-with-python/lectures-python-for-everybody/database-email.english.md

@@ -1,27 +0,0 @@
----
-id: 5e6a54a558d3af90110a60a0
-title: Introduction A
-challengeType: 11
-isRequired: true
-videoId: 3muQV-Im3Z0
----
-
-## Description
-<section id='description'>
-
-</section>
-
-## Tests
-<section id='tests'>
-
-```yml
-question:
-  text: 'Who should learn to program?'
-  answers:
-    - 'College students.'
-    - 'People who want to become software developers.'
-    - 'Everyone.'
-  solution: 3
-```
-
-</section>

curriculum/schema/challengeSchema.js

@@ -15,7 +15,7 @@ function getSchemaForLang(lang) {
     checksum: Joi.number(),
     dashedName: Joi.string(),
     description: Joi.when('challengeType', {
-      is: challengeTypes.step,
+      is: Joi.only([challengeTypes.step, challengeTypes.video]),
       then: Joi.string().allow(''),
       otherwise: Joi.string().required()
     }),
@@ -41,6 +41,7 @@ function getSchemaForLang(lang) {
     ),
     guideUrl: Joi.string().uri({ scheme: 'https' }),
     videoUrl: Joi.string().allow(''),
+    videoId: Joi.string(),
     forumTopicId: Joi.number(),
     helpRoom: Joi.string(),
     id: Joi.objectId().required(),