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6c223ff | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | """fractus — unified rebuild of the original systems.
L0: only the native bridge `_core` is exposed (lazily, see below). The modules
nn/, causal/, reasoning/ are added in later layers (L1+).
Design: the pure-Python submodules (fractus.nn, etc.) must remain importable
even if the native Rust module is not built (useful for standalone PyTorch
unit tests). We therefore do NOT import `_core` at module level — we expose it
via lazy __getattr__, which only raises if someone actually accesses it
without having run `maturin develop`.
"""
__version__ = "0.1.0"
def __getattr__(name):
# Lazy import of the native module fractus._core.
# Only triggers when someone does `from fractus import _core`
# or `fractus._core`. The imports `import fractus.nn` do not go through here.
#
# We use importlib.import_module rather than `from fractus import _core`,
# because the latter form would re-trigger __getattr__ → infinite recursion.
if name == "_core":
import importlib
try:
return importlib.import_module("fractus._core")
except ImportError as e:
raise ImportError(
"The native module fractus._core was not found. "
"Did you run `maturin develop`?"
) from e
raise AttributeError(f"module 'fractus' has no attribute {name!r}")
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