Python - Excel: Finding the first empty row in a column

问题

working from my last question I've managed to get a good chunk of the way to get my system finished. Of course I've run across a problem.

I basically have a program that plays a game. Every correct answer adds 10 to the global variable 'points'. Then I want to add 'points' into an excel spreadsheet.

This is where I get very stuck. I'm running XLRD-0.8.0, XLUTILS-1.4.1 and XLWT-0.7.5.

Of course I've looked up different things but they don't seem to work for me.

This is a simplified version of my code:

 import pygame, pygame.font, pygame.event, string, xlwt, xlrd, xlutils, socket


 points = 0

 def Uploadpoints(wbname):

     global points 
     wb = xlrd.open_workbook(wbname)

     # CODE TO FIND FIRST EMPTY CELL IN COLUMN 1 GOES HERE

     wb.write(row,0,points)
     wb.save()

 Uploadpoints('workbook1.xls')

I thought of doing something like this but I'm not sure how I would go about it so I post pseudo-code.

Define worksheet: ws = 'sheet 1' [Done]

Define column: col = 0 [column A] [Done]

Search for first row in col that is empty: ??? [Not Done]

Define first row that is empty as row: row =????? [Not Done]

Any help would be greatly appreciated. Thanks in advance.

回答1:

My answer to this question a few days ago is very relelvant.

Basically whats going wrong is that xlrd and xlwt are different modules with different objects. The object you read in with xlrd.open_workbook() IS NOT the same object which xlwt knows how to write to

To get around this, theres the copy function in xlutils.

from xlutils.copy import copy
import os

wb = xlrd.open_workbook(name) 

# Code to find the last open cell

wb = copy(wb)   #This is the important line!

sheet = wb.get_sheet(num)  #num is the index of the sheet you want to edit
sheet.write(whatever you want to write)

wb.save(name)

来源：https://stackoverflow.com/questions/21293968/python-excel-finding-the-first-empty-row-in-a-column

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python

excel

xlrd

xlwt

xlutils