xlrd

I am unable to find examples where xlwt is used to write into existing files. I have a existing xls file that I need to write to. When I use xlrd to read the file, I cant seem to figure out how to transform the "Book" type returned into a xlwt.Workbook. I would appreciate if someone can point me to an example. Greg Here's some sample code I used recently to do just that. It opens a workbook, goes down the rows, if a condition is met it writes some data in the row. Finally it saves the modified file. from xlutils.copy import copy # http://pypi.python.org/pypi/xlutils from xlrd import open

一、什么是xlrd模块? Python操作excel主要用到xlrd和xlwt这两个库，即xlrd是读excel,xlwt是写excel的库。 二、使用介绍 1.常用单元格中的数据类型 类型 含义 empty 空的 string 文本 number 浮点型 date 时间 error 错误 blank 空白表格 2.打开Excel文件的读取数据 data = xlrd.open_workbook(filename) 3.常用函数 excel中最重要的方法就是book和sheet的操作 1)获取一个book钟的工作表 table = data.sheets()[0] #通过索引顺序获取 table = data.sheet_by_index(sheet_index) #通过索引顺序获取 table = data.sheet_by_name(sheet_name) #通过名称获取 # 以上三个函数都会返回一个xlrd.sheet.Sheet()对象 names = data.sheet_name() data.sheet_loaded(sheet_name or index) #返回book中所有的工作表名字 data.sheet_loaded(sheet_name or index) #检查某个sheet是否导入完毕 如: 2)行的操作 nrows = table.nrows

I am trying to create a .csv file with the values from a Python list. When I print the values in the list they are all unicode (?), i.e. they look something like this [u'value 1', u'value 2', ...] If I iterate through the values in the list i.e. for v in mylist: print v they appear to be plain text. And I can put a , between each with print ','.join(mylist) And I can output to a file, i.e. myfile = open(...) print >>myfile, ','.join(mylist) But I want to output to a CSV and have delimiters around the values in the list e.g. "value 1", "value 2", ... I can't find an easy way to include the