flex-uuid-python 0.1.1

Flexible UUID parsing, normalization, and SQLAlchemy integration

flex-uuid

Flexible and safe UUID parsing and normalization utility. Whether the input is a string, 16-byte binary, or a uuid.UUID, it is processed through a single consistent flow. SQLAlchemy type integration is also provided.

Installation

pip install flex-uuid

Quick Start

from flex_uuid import UUIDStorage

# Accepts any input form
s1 = UUIDStorage("8b1a9953-c461-4af7-9bdf-66e2c0f3e2f1")
s2 = UUIDStorage("8b1a9953c4614af79bdf66e2c0f3e2f1")  # 32-hex without hyphens
s3 = UUIDStorage(s1.bytes)  # 16 bytes

assert s1.bytes == s2.bytes == s3.bytes
assert s1.uuid == s2.uuid

# Retrieve in the shape you want
print(s1.to_str())      # 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'
print(s1.bytes)         # b"\x.." * 16

SQLAlchemy Integration

from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
from flex_uuid import UUIDFlexType

class Base(DeclarativeBase):
    pass

class User(Base):
    __tablename__ = "users"
    id: Mapped[str] = mapped_column(UUIDFlexType(store_as_bytes=True), primary_key=True)

# When binding, str/bytes/uuid.UUID are all accepted.
# The database stores 16-byte binary. By default, reads return a string.

Options

• store_as_bytes: If True, stores in DB as 16 bytes; if False, stores as string
• return_uuid_object: If True, returns a uuid.UUID object on read

Why flex-uuid

• Automatically detects various input formats: with/without hyphens, case, bytes(16), uuid.UUID
• Consistent internal representation: always normalize to 16 bytes, then convert as needed
• SQLAlchemy type provided: safely maps to BINARY(16)/BYTEA, etc.
• Complete type hints, clear exception messages

License

MIT