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import pytest
import pandas.util._test_decorators as td
from pandas.compat._optional import VERSIONS
import pandas as pd
from pandas.core.computation import expr
from pandas.core.computation.engines import ENGINES
from pandas.util.version import Version
def test_compat():
# test we have compat with our version of numexpr
from pandas.core.computation.check import NUMEXPR_INSTALLED
ne = td.versioned_importorskip("numexpr")
ver = ne.__version__
if Version(ver) < Version(VERSIONS["numexpr"]):
assert not NUMEXPR_INSTALLED
else:
assert NUMEXPR_INSTALLED
@pytest.mark.parametrize("engine", ENGINES)
@pytest.mark.parametrize("parser", expr.PARSERS)
def test_invalid_numexpr_version(engine, parser):
if engine == "numexpr":
td.versioned_importorskip("numexpr")
a, b = 1, 2 # noqa: F841
res = pd.eval("a + b", engine=engine, parser=parser)
assert res == 3
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