python操作excel--生成图表

【问题】

想要折腾Python中的Excel中的图标，Chart，Graph。

【解决过程】

1.参考：

use python to generate graph in excel

说是可以用pywin32的OLE automation

去试试其代码：

#!/usr/bin/python

# -*- coding: utf-8 -*-

"""

Function:

【已解决】Python中处理操作Excel中的图表（Chart，Graph）

http://www.crifan.com/python_process_excel_chart_graph

 

Author:     Crifan Li

Version:    2012-12-25

Contact:    admin at crifan dot com

"""

 

from win32com.client import Dispatch;

 

def excelChart():

    ex = Dispatch("Excel.Application");

    print "ex=",ex;

     

if __name__ == "__main__":

    excelChart();

 

结果出错：

D:\tmp\tmp_dev_root\python\excel_chart>excel_chart.py

Traceback (most recent call last):

File "D:\tmp\tmp_dev_root\python\excel_chart\excel_chart.py", line 13, in <module>

from win32com.client import Dispatch;

ImportError: No module named win32com.client

2.关于上述错误的折腾过程，参见：很明显，是没有对应的库。

【已解决】Python中出错：ImportError: No module named win32com.client

3.再参考：

Creating Charts in Excel with pyExcelerator.ExcelMagic

去写代码，结果又出现了错误，详细折腾过程见：

4.最后，最终结果是，

在当前文件夹下面，建立一个空的xsl文件：chart_demo.xls

然后用下面的代码：

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
Function:
【已解决】Python中处理操作Excel中的图表（Chart，Graph）
http://www.crifan.com/python_process_excel_chart_graph

Author:     Crifan Li
Version:    2012-12-25
Contact:    admin at crifan dot com
"""

import os;
from win32com.client import Dispatch;
#from win32com.client import *;

def excelChart():
    xl = Dispatch("Excel.Application");
    #xl = win32com.client.Dispatch("Excel.Application")
    print "xl=",xl;

    #[1] Fail
    # xlsPath = "chart_demo.xls";
    # wb = xl.Workbooks.open(xlsPath); #pywintypes.com_error

    #[2] Fail
    # xlsPath = "D:\tmp\tmp_dev_root\python\excel_chart\chart_demo.xls";
    # absPath = os.path.abspath(xlsPath);
    # print "absPath=",absPath; #absPath= D:\tmp\tmp_dev_root\python\excel_chart\        mp      mp_dev_root\python\excel_chart\chart_demo.xls
    # wb = xl.Workbooks.open(absPath); #pywintypes.com_error

    #[3] Fail
    # xlsPath = "D:\tmp\tmp_dev_root\python\excel_chart\chart_demo.xls";
    # normalPath = os.path.normpath(xlsPath);
    # print "normalPath=",normalPath; #normalPath= D:  mp      mp_dev_root\python\excel_chart\chart_demo.xls
    # wb = xl.Workbooks.open(normalPath); #pywintypes.com_error

    #[4] Fail
    # rawPath = r"chart_demo.xls";
    # wb = xl.Workbooks.open(rawPath); #pywintypes.com_error

    #[5] OK
    xlsPath = "chart_demo.xls";
    absPath = os.path.abspath(xlsPath);
    print "absPath=",absPath; #absPath= D:\tmp\tmp_dev_root\python\excel_chart\chart_demo.xls
    wb = xl.Workbooks.open(absPath); #OK

    #[6] OK
    # rawPath = r"D:\tmp\tmp_dev_root\python\excel_chart\chart_demo.xls";
    # wb = xl.Workbooks.open(rawPath); # OK

    xl.Visible = 1;
    ws = wb.Worksheets(1);
    ws.Range('$A1:$D1').Value = ['NAME', 'PLACE', 'RANK', 'PRICE'];
    ws.Range('$A2:$D2').Value = ['Foo', 'Fooland', 1, 100];
    ws.Range('$A3:$D3').Value = ['Bar', 'Barland', 2, 75];
    ws.Range('$A4:$D4').Value = ['Stuff', 'Stuffland', 3, 50];
    wb.Save();
    wb.Charts.Add();
    wc1 = wb.Charts(1);

if __name__ == "__main__":
    excelChart();

写入的excel中的内容是：

生成的图表的效果是：

【总结】

总的来说，使用win32com.client，去操作excel文件，效果还是不错的。