Matplotlib multiple pages in PDF

mpl_multipage_pdf.py

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.backends.backend_pdf import PdfPages

with PdfPages('multipage.pdf') as pp:
    for i in range(0, 10):
        fig = plt.figure()
        ax1 = fig.add_subplot(211)
        ax2 = fig.add_subplot(212)
        x = np.linspace(0, 10)
        ax1.plot(x, np.sin(x + i * np.pi / 10))
        ax2.plot(x, np.cos(x + i * np.pi / 10))
        pp.savefig(fig)