matplotlib figure latex

import matplotlib.pyplot as plt
from matplotlib import rc
import seaborn as sns

rc('font', **{'family': 'sans-serif',
              'sans-serif': ['Computer Modern Roman']})
params = {'axes.labelsize': 12,
          'font.size': 12,
          'legend.fontsize': 12,
          'xtick.labelsize': 10,
          'ytick.labelsize': 10,
          'text.usetex': True,
          'figure.figsize': (8, 6)}
plt.rcParams.update(params)

sns.set_context("poster")
sns.set_style("ticks")