import statsmodels.graphics.tsaplots as tsa

ts.counts = y

%pylab inline
plt.figure(figsize=(15,8))
ax = plt.subplot(211)
tsa.plot_acf(ts.counts, lags=35, ax=ax)
ax = plt.subplot(212)
tsa.plot_pacf(ts.counts, lags=35, ax=ax)
pylab.show()