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107 lines
2.5 KiB
Markdown
107 lines
2.5 KiB
Markdown
---
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id: 6a0dcc730cb92a616f86f0c0
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title: "Challenge 296: Schema Validator Part 2"
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challengeType: 29
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dashedName: challenge-296
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---
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# --description--
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Given an object (JavaScript) or dictionary (Python), determine if it matches the following schema:
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```json
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{
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username: string,
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posts: number,
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verified: boolean
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}
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```
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- Extra keys are allowed
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# --hints--
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`is_valid_schema({"username": "alice", "posts": 10, "verified": False})` should return `True`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": "alice", "posts": 10, "verified": False}), True)`)
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}})
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```
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`is_valid_schema({"username": "carol", "posts": 15, "verified": True, "followers": 25})` should return `True`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": "carol", "posts": 15, "verified": True, "followers": 25}), True)`)
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}})
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```
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`is_valid_schema({"username": "frank", "posts": "21", "verified": True})` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": "frank", "posts": "21", "verified": True}), False)`)
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}})
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```
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`is_valid_schema({"username": "sam", "posts": 17, "verified": "false"})` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": "sam", "posts": 17, "verified": "false"}), False)`)
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}})
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```
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`is_valid_schema({"username": "bill", "verified": True})` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": "bill", "verified": True}), False)`)
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}})
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```
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`is_valid_schema({"username": "fred", "verified": True})` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": "fred", "verified": True}), False)`)
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}})
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```
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`is_valid_schema({"username": 5, "posts": 10, "verified": True})` should return `False`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertIs(is_valid_schema({"username": 5, "posts": 10, "verified": True}), False)`)
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}})
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```
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# --seed--
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## --seed-contents--
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```py
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def is_valid_schema(obj):
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return obj
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```
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# --solutions--
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```py
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def is_valid_schema(obj):
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return (
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isinstance(obj.get("username"), str) and
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isinstance(obj.get("posts"), int) and not isinstance(obj.get("posts"), bool) and
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isinstance(obj.get("verified"), bool)
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)
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```
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