python3.4读取excel数据绘图

 #!/usr/bin/env python
 # -*- coding:utf-8 -*-
 # __author__ = "blzhu"
 """
 python study
 Date：2017
 """
 # coding=utf-8
 #######################################################
 # filename:xlrd_draw.py
 # author:
 # date:xxxx-xx-xx
 # function：读excel文件中的数据
 #######################################################
 import numpy as np
 import matplotlib.pyplot as plt
 import xlrd

 # 打开一个workbook
 workbook = xlrd.open_workbook(r'E:\python\pycharmwork\test\matplotlibzbl\Barometer.xlsx')

 # 抓取所有sheet页的名称
 worksheets = workbook.sheet_names()
 print('worksheets is %s' % worksheets)

 # 定位到mySheet
 mySheet = workbook.sheet_by_name(u'Pressure')

 # get datas
 pressure = mySheet.col_values(0)
 print(pressure)
 time = mySheet.col(1)
 print('time1',time)
 time = [x.value for x in time]
 print('time2',time)

 # drop the 1st line of the data, which is the name of the data.
 pressure.pop(0)
 time.pop(0)

 # declare a figure object to plot
 fig = plt.figure(1)

 # plot pressure
 plt.plot(time,pressure)

 plt.title('Barometer')
 plt.ylabel('Pa')
 plt.xticks(range(len(time)),time)
 plt.show()

参考：http://blog.csdn.net/huhuang/article/details/53809891

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