使用xlrd和xlwt编辑现有的Excel工作簿和工作表

Question

在文档中xlrd,xlwt我学到了以下内容:

如何阅读现有的工作簿/表格:

from xlrd import open_workbook
wb = open_workbook("ex.xls")
s = wb.sheet_by_index(0)
print s.cell(0,0).value
#Prints contents of cell at location a1 in the first sheet in the document called ex.xls

如何创建新的工作簿/表:

from xlwt import Workbook
wb = Workbook()
Sheet1 = wb.add_sheet('Sheet1')
Sheet1.write(0,0,'Hello')
wb.save('ex.xls')
#Creates a document called ex.xls with a worksheet called "Sheet1" and writes "Hello" to the cell located at a1

我现在要做的是在现有工作簿中打开现有工作表并写入该工作表.

我尝试过类似的东西:

from xlwt import open_workbook
wb = open_workbook("ex.xls")
s = wb.sheet_by_index(0)
print s.cell(0,0).value

但open_workbook只是xlrd模块的一部分,而不是xlwt.

有任何想法吗？

编辑1:在Olivers建议之后,我调查xlutils并尝试了以下内容:

from xlrd import open_workbook
from xlwt import Workbook
from xlutils.copy import copy

wb = open_workbook("names.xls")
s = wb.get_sheet(0)
s.write(0,0,'A1')
wb.save('names.xls')

但是,这给了我以下错误消息:

File "C:\Python27\lib\site-packages\xlrd\book.py", line 655, in get_sheet
raise XLRDError("Can't load sheets after releasing resources.")
xlrd.biffh.XLRDError: Can't load sheets after releasing resources.

编辑2:错误消息是由于不正确使用该get_sheet功能.终于找到了如何使用它:

from xlrd import open_workbook
from xlwt import Workbook
from xlutils.copy import copy

rb = open_workbook("names.xls")
wb = copy(rb)

s = wb.get_sheet(0)
s.write(0,0,'A1')
wb.save('names.xls')

Answer 1

正如我在op的编辑中所写,要编辑现有的Excel文档,您必须使用该xlutils模块(Thanks Oliver)

这是正确的方法:

#xlrd, xlutils and xlwt modules need to be installed.  
#Can be done via pip install <module>
from xlrd import open_workbook
from xlutils.copy import copy

rb = open_workbook("names.xls")
wb = copy(rb)

s = wb.get_sheet(0)
s.write(0,0,'A1')
wb.save('names.xls')

这将使用文本"a1"替换第一张"names.xls"中位于a1的单元格的内容,然后保存文档.

Answer 2

这是使用openpyxl与xlsx兼容的模块执行上述代码的另一种方法.从我到目前为止看到的,它也保持格式化.

from openpyxl import load_workbook
wb = load_workbook('names.xlsx')
ws = wb['SheetName']
ws['A1'] = 'A1'
wb.save('names.xlsx')