python打开figure对象_python – AttributeError：’Figure’对象没有属性’plot’

我的代码

import matplotlib.pyplot as plt

plt.style.use("ggplot")

import numpy as np

from mtspec import mtspec

from mtspec.util import _load_mtdata

data = np.loadtxt('262_V01_C00_R000_TEx_BL_4096H.dat')

spec,freq,jackknife,f_statistics,degrees_of_f = mtspec(data=data, delta= 4930.0, time_bandwidth=4 ,number_of_tapers=5, nfft= 4194304, statistics=True)

fig = plt.figure()

ax2 = fig

ax2.plot(freq, spec, color='black')

ax2.fill_between(freq, jackknife[:, 0], jackknife[:, 1],color="red", alpha=0.3)

ax2.set_xlim(freq[0], freq[-1])

ax2.set_ylim(0.1E1, 1E5)

ax2.set_xlabel("Frequency $")

ax2.set_ylabel("Power Spectral Density $)")

plt.tight_layout()

plt.show()

问题在于我的代码的绘图部分.我应该改变什么？我在Ubuntu上使用Python 2.7.