Method setup

asv_bench/benchmarks/hash_functions.py:17–21

(self)

class Float64GroupIndex:
    # GH28303
    def setup(self):
        self.df = pd.date_range(
            start="1/1/2018", end="1/2/2018", periods=10**6
        ).to_frame()
        self.group_index = np.round(self.df.index.astype(int) / 10**9)

    def time_groupby(self):
        self.df.groupby(self.group_index).last()