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Editing upload 'monkey-pony-lion'

Content

import hashlib
import json
from datetime import datetime, date, time
from functools import wraps

def canonicalize(obj):
    """Recursively convert data to deterministic, JSON-serializable form."""
    if isinstance(obj, dict):
        return {k: canonicalize(obj[k]) for k in sorted(obj)}
    elif isinstance(obj, list):
        return [canonicalize(v) for v in obj]
    elif isinstance(obj, set):
        return sorted(canonicalize(v) for v in obj)
    elif isinstance(obj, (datetime, date, time)):
        return obj.isoformat()
    else:
        return obj

def with_stable_hash(cls):
    """Decorator that adds a stable_hash() method to a Pydantic model."""
    
    def stable_hash(self):
        # Pydantic v2: model_dump() ; v1: dict()
        data = canonicalize(self.model_dump() if hasattr(self, "model_dump") else self.dict())
        json_bytes = json.dumps(data, separators=(",", ":")).encode("utf-8")
        return hashlib.sha256(json_bytes).hexdigest()

cls.stable_hash = stable_hash
    return cls

----------

from pydantic import BaseModel
from datetime import datetime

@with_stable_hash
class User(BaseModel):
    name: str
    age: int
    tags: set[str]
    created: datetime

---

from functools import cached_property

def with_stable_hash(cls):
    @cached_property
    def stable_hash(self):
        data = canonicalize(self.model_dump() if hasattr(self, "model_dump") else self.dict())
        json_bytes = json.dumps(data, separators=(",", ":")).encode("utf-8")
        return hashlib.sha256(json_bytes).hexdigest()

cls.stable_hash = stable_hash
    return cls

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