python-scala-syntax-mapping SKILL.md skillA
python-scala-syntax-mapping from cxcscmu/skilllearnbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cxcscmu/skilllearnbench/python-scala-syntax-mapping@git:20260424.d50cf5aPins git:20260424.d50cf5a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cxcscmu/skilllearnbench
- Path
skills/b1-one-shot-claude-opus-4-6/python-scala-translation/python-scala-syntax-mapping/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260424.d50cf5a, committed Apr 24, 2026
- Size
- 1,594 bytes
- Repository stars
- 91
- License
- MIT
Reference for translating Python syntax constructs (enums, dataclasses, type vars, protocols) to Scala equivalents.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Python to Scala Syntax Mapping
## Enums
Python `Enum` -> Scala sealed trait + case objects or `Enumeration`:
```scala
// Preferred: sealed trait for pattern matching exhaustiveness
sealed abstract class TokenType(val value: String)
object TokenType {
case object STRING extends TokenType("string")
case object NUMERIC extends TokenType("numeric")
}
```
## Dataclasses (frozen=True) -> Case Classes
```scala
// Python: @dataclass(frozen=True) with default fields
// Scala: case class (immutable by default)
case class Token(value: String, tokenType: TokenType, metadata: Map[String, Any] = Map.empty)
```
## TypeVar -> Type Parameters
```scala
// Python: T = TypeVar("T") -> [T]
// Python: T_co = TypeVar(covariant) -> [+T]
// Python: T_contra = TypeVar(contra) -> [-T]
// Python: NumericT = TypeVar("NumericT", int, float, Decimal) -> type class or union
```
## Protocol -> Trait (structural typing)
```scala
// Python Protocol -> Scala trait
trait Tokenizable {
def toToken: String
}
```
## Optional / Union
```scala
// Python: Optional[X] -> Scala: Option[X]
// Python: X | None -> Scala: Option[X]
…Read the whole file at its exact version.
How to install
mdr add cxcscmu/skilllearnbench/python-scala-syntax-mapping@sha256:c4402bcd017103b4The line at the top of this page pins the label git:20260424.d50cf5a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_fb67mnhnbephz3z5)
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Versions
The registry has recorded 1 version of this file, committed on Apr 24, 2026.
Audit of the latest version
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- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
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- pass: No curl or wget piped into a shell
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Source
cxcscmu/skilllearnbench · 91 stars · license MIT · pushed 2026-10-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fb67mnhnbephz3z5 GET https://markdownregistry.com/api/v1/resolve?ref=cxcscmu/skilllearnbench/python-scala-syntax-mapping GET https://markdownregistry.com/api/v1/blob/c4402bcd017103b4e125ac05858594aeafa235767ef24a62f2874940d748e884
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.