如何在文件名中使用变量

Question

I am trying to use the current date & time as a file name for my spreadsheet file but I keep on getting the error "no such file or directory exists." Below is the code that I tried to use:

wb = Workbook()
dest_filename = time.strftime("%d/%m/%Y_%H:%M.xlsx")
wb.save(filename = dest_filename)

Answer 1

Look at your file name:

time.strftime("%d/%m/%Y_%H:%M.xlsx")

When this statement is executed it returns a result like this:

'10/06/2015_11:44.xlsx'

Do you have a directory structure that looks like this:

/PathToScript
   /10
      /06
          2015_11:44.xlsx

Those / s in the file name are indicating directories. If you wish to have a DMY pattern, I suggest using something other than a / as a separator:

time.strftime("%d-%m-%Y_%H:%M.xlsx")