import sys
from collections.abc import Callable

is_ironpython = "IronPython" in sys.version


def is_callable(x):
    return isinstance(x, Callable)


def execfile(fname, glob, loc=None):
    loc = loc if (loc is not None) else glob

    exec(
        compile(
            open(
                fname,
                "r",
                encoding="utf-8",
            ).read(),
            fname,
            "exec",
        ),
        glob,
        loc,
    )