Method setup

asv_bench/benchmarks/join_merge.py:185–190

(self)

class JoinMultiindexSubset:
    def setup(self):
        N = 100_000
        mi1 = MultiIndex.from_arrays([np.arange(N)] * 4, names=["a", "b", "c", "d"])
        mi2 = MultiIndex.from_arrays([np.arange(N)] * 2, names=["a", "b"])
        self.left = DataFrame({"col1": 1}, index=mi1)
        self.right = DataFrame({"col2": 2}, index=mi2)

    def time_join_multiindex_subset(self):
        self.left.join(self.right)