Created
November 12, 2019 11:47
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2019年天猫双11交易额预测
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# coding=utf-8 | |
import numpy as np | |
x = range(2009, 2019) # 年份 | |
y = [0.5, 9.36, 52, 191, 350, 571, 912, 1207, 1682, 2135] # 2009到2018年的交易额 | |
fittedPara = np.polyfit(x, y, 3) # 进行3次方多项式拟合 | |
fx = np.poly1d(fittedPara) | |
Y = fx(range(2009, 2020)) # 用历年数据得出的拟合公式,预测2019年的交易额 | |
print Y # 预测结果为 2689亿 |
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