Python - 如何防止for循环覆盖相同的excel表

Question

最近我一直在做我的小项目，该项目会为我自动生成工作时间电子表格。它只对我来说效果很好，但是当我想生成多个工作表（后来被称为工作表）和/或生成多个电子表格时，它会覆盖旧的。

为了打开、编辑和生成电子表格，我使用的是 openpyxl lib。

我尝试移动保存部分并在循环之外生成部分等，但这些都没有帮助我。

问题是如何防止 for 循环覆盖文件而不是生成新文件？

下面是该软件的主要部分。

cols = [2, 3, 4, 12]
row = 9
hrs = 0
nhrs = 0


for worker in workers:
    sheet.title = ('{} {}'.format(worker.name, worker.surename))
    for day, hday in itertools.zip_longest(days, holidays):
            if day.weekday() <= 4 and day not in holydays:
                sheet.cell(row=row, column=cols[0]).value = '08:00'
                sheet.cell(row=row, column=cols[1]).value = '16:00'
                sheet.cell(row=row, column=cols[2]).value = '8 h'
                hrs += 8
                row += 1
            elif day.weekday() > 4 and day not in holidays:
                sheet.cell(column=cols[0], row=row).value = ''
                row += 1
            elif day in holidays:
                sheet.cell(column=cols[3], row=row).value = '8 h'
                nhrs += 8
                row += 1

    sheet.cell(column=cols[2], row=40).value = str(hrs) + ' h'
    sheet.cell(column=cols[3], row=40).value = str(nhrs) + ' h'

workbook.save('SPREADSHEET_{}.xlsx'.format(native_month))
print('Done')

提前致谢！

---

从评论编辑：

# native_month for the workbook name is provided by this function applied to a 1-12 
def month_name_native(month): 
    months = ["Unknown", "Januar", "Februar", "Mart", "April", "Maj", "Jun", 
              "Jul", "August", "Septembar", "Oktobar", "Decembar" ] 
    return months[month].upper() 

Answer 1

如果我的理解正确，您希望为每个工作人员提供一个新的电子表格，对吗？

您当前正在做的是一遍又一遍地使用同一个工作表对象，因此它被覆盖了。您必须在 for 循环中为每个工作人员创建一个新工作表。应该这样做：

cols = [2, 3, 4, 12]
row = 9
hrs = 0
nhrs = 0
workbook = Workbook()  # assuming you imported openpyxl with *, else adjust

for worker in workers:
    sheet = workbook.create_sheet('{} {}'.format(worker.name, worker.surename)) 
    for day, hday in itertools.zip_longest(days, holidays):
           if day.weekday() <= 4 and day not in holydays:
               sheet.cell(row=row, column=cols[0]).value = '08:00'
               sheet.cell(row=row, column=cols[1]).value = '16:00'
               sheet.cell(row=row, column=cols[2]).value = '8 h'
               hrs += 8
               row += 1
           elif day.weekday() > 4 and day not in holidays:
               sheet.cell(column=cols[0], row=row).value = ''
               row += 1
           elif day in holidays:
               sheet.cell(column=cols[3], row=row).value = '8 h'
               nhrs += 8
               row += 1

    sheet.cell(column=cols[2], row=40).value = str(hrs) + ' h'
    sheet.cell(column=cols[3], row=40).value = str(nhrs) + ' h'

workbook.save('SPREADSHEET_{}.xlsx'.format(native_month))
print('Done')