old_name = input(‘请输入您要备份的文件名:’)
index=old_name.find(’.’)
rindex = old_name.rfind(’.’)
print(index)
print(rindex)
print(old_name[:rindex])
old_name = input(‘请输入您要备份的文件名:’)
index=old_name.find(’.’)
rindex = old_name.rfind(’.’)
print(index)
print(rindex)
print(old_name[:rindex])