dsviper — Digital Substrate Viper Runtime
dsviper is the Python extension module for Viper, a C++ runtime built around
metadata-driven type and value systems. It provides a seamless bidirectional bridge
between Python and Viper's strong-typed data model.
Key Features
- Type & Value System — Dynamically construct types and instantiate strong-typed values with automatic Python ↔ C++ bridging.
- Commit Database — Versioned persistence with full mutation history (DAG of commits).
- Definitions — Define data models programmatically: concepts, structures, enumerations, attachments.
- Blob System — BlobArray with zero-copy NumPy integration, BlobPack for structured binary data.
- Codecs — Stream binary and JSON serialization for all Viper types.
- Typed — ships its type hints (PEP 561): mypy and Pyright check your code against the classes, protocols and returns the binding actually has.
Quick Start
from dsviper import *
# Strong-typed value system
names = Value.create(TypeVector(Type.STRING))
names.extend(["alice", "bob"])
print(names) # ['alice', 'bob']
print(names.type()) # vector<string>
names.append(42) # ViperError: expected 'str', got 'int'
Commit Database
A complete example — define a model, create a versioned database, commit and query:
from dsviper import *
# Define a model dynamically
defs = Definitions()
ns = NameSpace(ValueUUId.create(), "App")
t_User = defs.create_concept(ns, "User")
d_Profile = TypeStructureDescriptor("Profile")
d_Profile.add_field("name", Type.STRING)
a_profile = defs.create_attachment(ns, "profile", t_User,
defs.create_structure(ns, d_Profile))
# Create a versioned database and commit data
db = CommitDatabase.create_in_memory()
db.extend_definitions(defs.const())
key = a_profile.create_key()
doc = a_profile.create_document()
doc.name = "Alice"
mutable = CommitMutableState(CommitStateBuilder.initial_state(db))
mutable.attachment_mutating().set(a_profile, key, doc)
db.commit_mutations("Add Alice", mutable)
# Query
state = CommitStateBuilder.state(db, db.last_commit_id())
state.attachment_getting().get(a_profile, key)
# Optional({name='Alice'})
Installation
pip install dsviper
Requires Python ≥ 3.10. Pre-built wheels are provided for all supported platforms.
Supported Platforms
| Platform | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 |
|---|---|---|---|---|---|
| Linux x86_64 | ✅ | ✅ | ✅ | ✅ | ✅ |
| Linux aarch64 | ✅ | ✅ | ✅ | ✅ | ✅ |
| macOS arm64 (Apple Silicon) | ✅ | ✅ | ✅ | ✅ | ✅ |
| macOS x86_64 (Intel) | ✅ | ✅ | ✅ | ✅ | ✅ |
| Windows x64 | ✅ | ✅ | ✅ | ✅ | ✅ |
| Windows arm64 | — | ✅ | ✅ | ✅ | ✅ |
Documentation
Full documentation at docs.digitalsubstrate.io/dsviper-python
License
Proprietary — Commercial license required. Contact Digital Substrate for licensing information.
Release files for dsviper 1.2.27
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
Total release size: 92.9 MB
Release files / dsviper-1.2.27-cp314-cp314-win_arm64.whl
| Download URL | dsviper-1.2.27-cp314-cp314-win_arm64.whl |
|---|---|
| Size | 2.6 MB |
| Tags | CPython 3.14 Windows ARM64 |
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