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"""Functions for initializing the Julia environment and installing deps."""
import os
import warnings
# Required to avoid segfaults (https://juliapy.github.io/PythonCall.jl/dev/faq/)
if os.environ["PYTHON_JULIACALL_HANDLE_SIGNALS"] not in {"yes", ""}:
warnings.warn(
"PYTHON_JULIACALL_HANDLE_SIGNALS environment variable is set to something other than 'yes' or ''. "
+ "You will experience segfaults if running with multithreading."
)
os.environ["PYTHON_JULIACALL_HANDLE_SIGNALS"] = "yes"
import juliacall
import juliapkg
jl = juliacall.newmodule("PySR")
from juliacall import convert as jl_convert
jl.seval("using PythonCall: PythonCall")
PythonCall = jl.PythonCall
juliainfo = None
julia_initialized = False
julia_kwargs_at_initialization = None
julia_activated_env = None
def _get_io_arg(quiet):
io = "devnull" if quiet else "stderr"
return f"io={io}"
def _escape_filename(filename):
"""Turn a path into a string with correctly escaped backslashes."""
str_repr = str(filename)
str_repr = str_repr.replace("\\", "\\\\")
return str_repr
def _backend_version_assertion():
backend_version = jl.seval("string(SymbolicRegression.PACKAGE_VERSION)")
expected_backend_version = juliapkg.status(target="SymbolicRegression").version
if backend_version != expected_backend_version: # pragma: no cover
warnings.warn(
f"PySR backend (SymbolicRegression.jl) version {backend_version} "
f"does not match expected version {expected_backend_version}. "
"Things may break. "
)
def _load_cluster_manager(cluster_manager):
jl.seval(f"using ClusterManagers: addprocs_{cluster_manager}")
return jl.seval(f"addprocs_{cluster_manager}")
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