Question

我最近在这里问了一个问题how can I read each line of a xls file with pausing，我找到了解决问题的答案。代码如下

import time
import pandas as pd
import os
import xlrd
# at first I try to know how many rows and how many columns I have 
workbook = xlrd.open_workbook('myfile.xls')
for sheet in workbook.sheets():
    for row in range(sheet.nrows):
        for column in range(sheet.ncols):
            os.system('clear')
            print "value::: ", sheet.cell(row,column).value
            time.sleep(5.5)    # pause 5.5 seconds

我想要做的是以一种方式进行循环，直到xls的行行结束，然后一遍又一遍地返回开头，直到我停止或有时暂停它，你知道吗？去做这个？

Answer 1

把它放在另一个循环中。例如，如果你想重复整个事情10次，那就这样做：

for i in xrange(10):    
    for sheet in workbook.sheets():
        num_of_cells = sheet.nrows * sheet.ncols
        for cell in range(num_of_cells):
            row = int(cell / sheet.ncols)
            col = cell % sheet.ncols
            print "value::: ", sheet.cell(row, col).value
            time.sleep(5.5)    # pause 5.5 seconds

Answer 2

我发现最简单的方法可能就是使用python的{{1}}例外 - 当然，如果您在结束循环时整个脚本停止运行（通过按Ctrl-C）。

KeyboardInterrupt

如何循环，直到我们停止或暂停它

2 个答案: