使用openpyxl来编辑现有的excel

xlswriter 打开文件的时候会清空原有的内容，所以不能用来在原有excel上修改。还好，有openpyxl 这个库，可以完成编辑现有的excel这个功能～

    from openpyxl import load_workbook

    #Open an xlsx for reading
    wb = load_workbook(filename = dest)
    #Get the current Active Sheet
    ws = wb.get_active_sheet()
    #You can also select a particular sheet
    #based on sheet name
    #ws = wb.get_sheet_by_name("Sheet1")
    #Open the csv file
    with open(src) as fin:
        #read the csv
        reader = csv.reader(fin)
        #enumerate the rows, so that you can
        #get the row index for the xlsx
        for index,row in enumerate(reader):
            #Assuming space separated,
            #Split the row to cells (column)
            row = row[0].split()
            #Access the particular cell and assign
            #the value from the csv row
            ws.cell(row=index,column=7).value = row[2]
            ws.cell(row=index,column=8).value = row[3]
    #save the csb file
    wb.save(dest)