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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."
)
if os.environ.get("JULIA_NUM_THREADS", "auto") != "auto":
warnings.warn(
"JULIA_NUM_THREADS environment variable is set to something other than 'auto', "
"so PySR was not able to set it. You may wish to set it to `'auto'` for full use "
"of your CPU."
)
# TODO: Remove these when juliapkg lets you specify this
for k, default in (
("PYTHON_JULIACALL_HANDLE_SIGNALS", "yes"),
("JULIA_NUM_THREADS", "auto"),
("JULIA_OPTIMIZE", "3"),
):
os.environ[k] = os.environ.get(k, default)
def is_in_jupyter() -> bool:
try:
ipy = get_ipython().__class__.__name__ # type: ignore
return ipy == "ZMQInteractiveShell"
except NameError:
return False
if is_in_jupyter():
get_ipython().run_line_magic("load_ext", "julia.ipython") # type: ignore
from juliacall import Main as jl # type: ignore
# TODO: Overwrite this once PythonCall.jl is updated:
def seval(s: str):
return jl.eval(jl.Meta.parseall(s))
jl.seval = seval
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