如何从Excel读取数据并逐行将其写入文本文件?

时间:2013-07-31 17:59:38

标签: python xlrd

我想编写代码以从Excel获取数据并将其写入文本文件。这是我的代码:

import xlrd
import os.path
wb = xlrd.open_workbook(os.path.join('D:\TRB 2014 Data','SPS1 demo data.xlsx'))
wb.sheet_names()
sh = wb.sheet_by_index(0)
i = 1

while sh.cell(i,11).value != 0:

   Load = sh.cell(i,11).value
   D1 = sh.cell(i,13).value
   D2 = sh.cell(i,14).value
   D3 = sh.cell(i,15).value
   D4 = sh.cell(i,16).value
   D5 = sh.cell(i,17).value
   D6 = sh.cell(i,18).value
   D7 = sh.cell(i,19).value
   DB1 = str(Load) + "  " + str(D1) + "  " + str(D2) + "  " + str(D3)+ "  " + str(D4)+ "  " + str(D5)+ "  " + str(D6)+ "  " + str(D7)

   file = open("Output.txt", "w")
   file.write(DB1 + '\n')
   file.close
   i = i + 1

此代码的问题是写入文本文件的数据始终显示在第一行。因此,虽然我在excel中有20行数据,但文本文件仅显示文本文件中第一行的excel文件中的最后一个数据。我在'\n'中有file.write但是,它似乎无效。

4 个答案:

答案 0 :(得分:5)

您应open output.txt个文件append mode

file = open("Output.txt", "a")

此外,您应该在进入循环之前执行此操作,并且应该在该循环之后关闭它。


<强>更新

在这种情况下,您可以使用with而不是在结尾处关闭文件句柄。

还包括@Josh in his own answer提出的好建议,代码可以是:

import xlrd
import os.path

wb = xlrd.open_workbook(os.path.join('D:\TRB 2014 Data','SPS1 demo data.xlsx'))
wb.sheet_names()
sh = wb.sheet_by_index(0)
i = 1
with open("Output.txt", "a") as my_file:
    while sh.cell(i,11).value != 0:
        Load = sh.cell(i,11).value
        all_d = sh.col_values(i, 13, 19)
        DB1 = Load + " " + (" ".join(all_d))
        my_file.write(DB1 + '\n')
        i += 1

答案 1 :(得分:4)

import xlrd

workbook=xlrd.open_workbook("xxx.xls")
sh=workbook.sheet_by_name("test1")
print sh.nrows
print sh.ncols
n=0
i=0
file=open("xxx.txt","w")
for n in range(sh.nrows):
    for i in range(sh.ncols):
        data =sh.cell_value(n,i)+" "
        print  data,
        file.write(data+" ")
    print 
    file.write("\n")
 this code is working properly for writing into text file

答案 2 :(得分:2)

您正在打开和关闭Excel工作表中每行的输出文件。

在while循环之前打开文件,然后在完成循环后关闭它。

import xlrd
import os.path
wb = xlrd.open_workbook(os.path.join('D:\TRB 2014 Data','SPS1 demo data.xlsx'))
wb.sheet_names()
sh = wb.sheet_by_index(0)
i = 1
file = open("Output.txt", "w")
while sh.cell(i,11).value != 0:
   Load = sh.cell(i,11).value
   D1 = sh.cell(i,13).value
   D2 = sh.cell(i,14).value
   D3 = sh.cell(i,15).value
   D4 = sh.cell(i,16).value
   D5 = sh.cell(i,17).value
   D6 = sh.cell(i,18).value
   D7 = sh.cell(i,19).value
   DB1 = str(Load) + "  " + str(D1) + "  " + str(D2) + "  " + str(D3)+ "  " + str(D4)+ "  " + str(D5)+ "  " + str(D6)+ "  " + str(D7)

   file.write(DB1 + '\n')
   i = i + 1
file.close

答案 3 :(得分:2)

xlrd实际上有一个很好的函数来获取列或行中的一堆单元格的值。使用它,您可以大量简化代码(我非常确定它们的功能更有效)。这样你的代码就可以成为:

import xlrd
import os.path
wb = xlrd.open_workbook(os.path.join('D:\TRB 2014 Data','SPS1 demo data.xlsx'))
wb.sheet_names()
sh = wb.sheet_by_index(0)
i = 1
my_file = open("Output.txt", "a")

while sh.cell(i,11).value != 0:
    Load = sh.cell(i,11).value
    all_d = sh.col_values(i, 13, 19)
    DB1 = Load+" "+(" ".join(all_d))
    my_file.write(DB1 + '\n')
    i += 1
file.close
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