python "IndexError: list index out of range"|目标 : Read 1 excel file & append data to a 2nd excel file

Question

脚本的目标是从每天从 cron 作业生成的 excel 文件中获取数据，并将该数据附加到“主”excel 文件的底部。

这是我现在的位置:

# Find the most recent excel file created by the cron job & open it.

localtime = time.localtime(time.time())
yy = localtime.tm_year
mm = localtime.tm_mon
dd = localtime.tm_mday

file_name = 'daily_' + str(yy) + '_' + str(mm) + '_' + str(dd-1) + '.xls'
file_loc = '/Users/' + file_name
new_sheet = open_workbook(file_loc, on_demand=True).sheet_by_index(0)

# Grab all the data from the recent cron job file starting at row 2 to avoid
# including headers.

for row in range(1, new_sheet.nrows):
    values = []
    for col in range(new_sheet.ncols):
        values.append(new_sheet.cell(row,col).value)
"""
The above loop structures the list 'values[]' in a way that the print
statement of value looks like the below output; which matches the formatting of 
master_file.xlsx:

        2341511  Sports 12112 Dog   324.92
        71611    Other  18192 Cat   128.17
        ...
"""

# Find the excel master file & open it.

sheet = open_workbook('master_file.xlsx').sheet_by_index(0)

# Find the first row that is empty.
new_row = sheet.nrows + 1

# Append the values[] list to the master file starting at row(new_row) and save
# the db file.

for row_num, row in enumerate(values, new_row):
    for col_num, col in enumerate(row):
        sheet.row(row_num).write(col_num, col)

sheet.save('master_file.xlsx')

我的回溯错误是:

File "daily.py", line 45, in <module>
    sheet.row(row_num).write(col_num, col)
  File "/Users/code/env/lib/python2.7/site-packages/xlrd/sheet.py", line 462, in row
    for colx in xrange(len(self._cell_values[rowx]))
IndexError: list index out of range

如有任何帮助，我们将不胜感激!

Answer 1

代码的直觉是您实际上并没有在迭代之前向工作表添加一行。

xlrd 看起来不像它实际上具有修改现有工作表的方法。查看这篇可能有帮助的 SO 帖子...

How to add new column and row to .xls file using xlrd