计算数值出现的次数“ import cufflinks as cf cf.go_offline() import numpy as np import pandas as pd set_slippage_avg_cost = [22.01, 20.98, 17.11, 9.06, 9.4, 3.65, 19.65, 7.01, 11.21, 10.3, 5.1, 23.98, 12.03, 8.13, 8.07, 9.28, 3.93, 4.23, 18.6, 8.22, 7.85, 5.39,