Question

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 !"

我认为在命令的前半部分添加第一个和第二个数字以获得总和，而后半部分是一个返回开始或归零的命令。我不懂python语言。

Answer 1

您应该首先尝试运行代码并使用它来理解它。代码很简单;前半部分取两个用户输入并相互添加，然后显示结果。

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

至于下半场，它需要一个数字，它向下计数到零

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 !)

我改变了你的代码，因为你的线条有点乱，有些不正确。我的这个版本适用于python3和 NOT python2.7。如果你想学习python，我建议你从code academy python tutorial

开始

Python代码：请解释一下

1 个答案: