Python代码：请解释一下

我认为命令的前半部分是将第一个数字和第二个数字相加以得到和，后半部分是返回开始或归零的命令。我不懂python语言。

您可能应该先尝试运行代码，并使用它来理解它。代码很简单；前半部分获取两个用户输入，并将它们相互添加，然后显示结果

first_num = raw input ("Please input first number. ")
sec_num = raw input (" Please input second number:")
answer = into( first_num) +into( sec_num)

print " Now I will add your two numbers : ", answer

print " Pretty cool. huh ?
print " Now I'll  count backwards from ",answer

counter = answer
while (counter >=0):
    print counter
    counter = counter-1
print " All done !"

至于后半部分，它取一个数字，从该数字向下计数直到零

first_num = input("Please input first number:") # get first number input
sec_num = input("Please input second number:")  # get second number input
answer = int(first_num) +int(sec_num)           # add up int values of the numbers
print(" Now I will add your two numbers : ", answer)    # display answer

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我更改了你的代码，因为你的代码行有点凌乱，有些不正确。我的这个版本适用于python3和而不是python2.7。如果你想学习python，我建议你从

开始，至少把格式正确的代码放进去，还有什么问题吗？谢谢你。我确实在发帖时遇到了一些问题。顺序出了问题。再次感谢

print("Now I'll count backwards from ", answer)
counter = answer           # set counter start value
while(counter >=0):        
     print(counter)        # display counter value on each iteration
     counter = counter-1   # decrement counter value on each iteration
print(" All done !)