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| """Functions for initializing the Julia environment and installing deps.""" | |
| import os | |
| import sys | |
| import warnings | |
| if "juliacall" in sys.modules: | |
| warnings.warn( | |
| "juliacall module already imported. Make sure that you have set `PYTHON_JULIACALL_HANDLE_SIGNALS=yes` to avoid segfaults." | |
| ) | |
| # Required to avoid segfaults (https://juliapy.github.io/PythonCall.jl/dev/faq/) | |
| if os.environ.get("PYTHON_JULIACALL_HANDLE_SIGNALS", "yes") != "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" | |
| os.environ["JULIA_NUM_THREADS"] = os.environ.get("JULIA_NUM_THREADS", "auto") | |
| import juliapkg | |
| from juliacall import Main as jl | |
| from juliacall import convert as jl_convert | |
| jl.seval("using Serialization: Serialization") | |
| jl.seval("using PythonCall: PythonCall") | |
| juliainfo = None | |
| julia_initialized = False | |
| julia_kwargs_at_initialization = None | |
| julia_activated_env = None | |
| 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}") | |
| def jl_array(x): | |
| if x is None: | |
| return None | |
| return jl_convert(jl.Array, x) | |
| def jl_deserialize_s(s): | |
| if s is None: | |
| return s | |
| buf = jl.IOBuffer() | |
| jl.write(buf, jl_array(s)) | |
| jl.seekstart(buf) | |
| return jl.Serialization.deserialize(buf) | |