İmport Excel Data in Python

import xlrd
import matplotlib.pyplot as plt

workbook = xlrd.open_workbook('C:\Users\pc\Desktop\Kitap2.xls')

workbook.nsheets

sheet=workbook.sheet_by_index(0)

a=[sheet.cell_value(rowx=i, colx=0) for i in range(sheet.nrows)]

plt.plot(a)