Question

我目前正在使用python创建一个二进制程序的denary，我不知道为什么它不起作用，如果有人可以帮助我并修复我的代码，我将不胜感激。

answer = []
number = 0

denaryNumber = int(input("Type the number you would like to be put in binary (LIMIT IS 255)"))
binary = [128,64,32,16,8,4,2,1]

for x in range (0,8):
    if denaryNumber >= binary[number]:
        subtraction = binary[number] - (denaryNumber)
        answer.append (1)
        number += 1
    else:
        answer.append (0)
        number += 1
print (answer)

Answer 1

由于以下行，这不起作用：

subtraction = binary[number] - (denaryNumber)

您将从永远不再使用的binary索引中减去，然后将其分配给从未使用过的变量。你打算这样做：

denaryNumber -= binary[number]

Answer 2

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<p>Hold down mousewheel and move ...</p>

阅读我输入的内容作为您的代码的评论，看看有什么不对。最终答案应如下所示：

answer = []

number = 0    #what is this number for when you have the same counter in x

denaryNumber = int(input("Type the number you would like to be put in binary (LIMIT IS 255)"))

binary = [128,64,32,16,8,4,2,1]

for x in range (0,8): #x is being updated each time the loop goes, so it's 0,1,2,3,4,5,6,7, just like number so number is useless

 if denaryNumber >= binary[number]:  #wrong indentation

    subtraction = binary[number] - (denaryNumber)   # you want denaryNumber - binary[x] or you will get a negative number and that's why it's not workting

   answer.append (1)      #wrong indentation  and what is 'append (1)'. why is there a space? function calls have no space between the '()'

    number += 1

    else:                 #wrong indentation
        answer.append (0) #function calls have no space between the function name and the parameter brakets 
        number += 1

print (answer)

如果您没有阅读评论，需要注意一些要点，缩进在python中很重要。函数调用在名称和answer = [] denaryNumber = int(input("Type the number you would like to be put in binary (LIMIT IS 255)")) binary = [128,64,32,16,8,4,2,1] for x in range(0,8): if denaryNumber >= binary[x]: denaryNumber = denaryNumber - binary[x] answer.append(1) else: answer.append(0) print(answer)之间没有空格。 python中的循环基本上是()循环，它们将for each通过iterate对象。在这种情况下，iterable是可迭代对象，x将是0-7的计数器。

作为旁注，我知道这是一个家庭作业问题，但有内置的功能可以做你想做的事情，你可能无法使用但是对于将来的参考很有用。。 range()将数字转换为二进制字符串：

bin()

如果您需要输出相同，则可以：

denaryNumber = int(input("Type the number you would like to be put in binary (LIMIT IS 255)"))
print(bin(denaryNumber))

我的python否定二进制程序有什么问题？

2 个答案: