การสร้างฟีเจอร์แบบเลื่อนเวลา

# These are the "time lags"
shifts = np.arange(1, 11).astype(int)

# Use a dictionary comprehension to create name: value pairs, one pair per shift
shifted_data = {"lag_{}_day".format(day_shift): prices_perc.____(____) for day_shift in shifts}

# Convert into a DataFrame for subsequent use
prices_perc_shifted = ____(shifted_data)

# Plot the first 100 samples of each
ax = prices_perc_shifted.iloc[:100].plot(cmap=plt.cm.viridis)
prices_perc.iloc[:100].plot(color='r', lw=2)
ax.legend(loc='best')
plt.show()