请问出现AttributeError: 'int' object has no attribute 'date'怎么解决

Question

import matplotlib.pyplot as plt

%matplotlib inline

plt.figure(figsize=(8,6))

for maturity in maturities:

    data=plot_data[options_data.MATURITY==maturity]

    plt.plot(data['STRIKE'],data['IMP_VOL'],

            lable=maturity.date(),lw=1.5)

    plt.plot(data['STRIKE'],data['IMP_VOL'],'r.')

plt.grid(True)

plt.xlable('strike')

plt.ylable('implied volatility of volatility')

plt.legend()

plt.show()

Answer 1

maturity是int类型，没有date属性，这是报错的原因

Answer 2

哎嘿，你那 maturities 从哪来的？