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102 lines
2.3 KiB
Markdown
102 lines
2.3 KiB
Markdown
---
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id: 69272dcf1c24b44fd79137c3
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title: "Challenge 140: SCREAMING_SNAKE_CASE"
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challengeType: 29
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dashedName: challenge-140
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---
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# --description--
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Given a string representing a variable name, return the variable name converted to SCREAMING_SNAKE_CASE.
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The given variable names will be written in one of the following formats:
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- `camelCase`
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- `PascalCase`
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- `snake_case`
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- `kebab-case`
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In the above formats, words are separated by an underscore (`_`), a hyphen (`-`), or a new word starts with a capital letter.
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To convert to SCREAMING_SNAKE_CASE:
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- Make all letters uppercase
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- Separate words with an underscore (`_`)
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# --hints--
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`to_screaming_snake_case("userEmail")` should return `"USER_EMAIL"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(to_screaming_snake_case("userEmail"), "USER_EMAIL")`)
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}})
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```
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`to_screaming_snake_case("UserPassword")` should return `"USER_PASSWORD"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(to_screaming_snake_case("UserPassword"), "USER_PASSWORD")`)
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}})
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```
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`to_screaming_snake_case("user_id")` should return `"USER_ID"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(to_screaming_snake_case("user_id"), "USER_ID")`)
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}})
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```
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`to_screaming_snake_case("user-address")` should return `"USER_ADDRESS"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(to_screaming_snake_case("user-address"), "USER_ADDRESS")`)
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}})
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```
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`to_screaming_snake_case("username")` should return `"USERNAME"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(to_screaming_snake_case("username"), "USERNAME")`)
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}})
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```
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`to_screaming_snake_case("my_variable_name")` should return `"MY_VARIABLE_NAME"`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(to_screaming_snake_case("my_variable_name"), "MY_VARIABLE_NAME")`)
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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 to_screaming_snake_case(variable_name):
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return variable_name
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```
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# --solutions--
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```py
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import re
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def to_screaming_snake_case(variable_name):
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temp = re.sub(r'[-_]+', ' ', variable_name)
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temp = re.sub(r'([a-z0-9])([A-Z])', r'\1 \2', temp)
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words = temp.strip().split()
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return '_'.join(words).upper()
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```
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