import matplotlib.pyplot as plt%matplotlib inlineplt.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()
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