Python Force python保持int变量的前导零 [英] Python Force python to keep leading zeros of int variables
问题描述
下面是一段代码,它是功能解密和加密程序的一部分。
Below is a section of code which is part of a functional decryption and encryption program.
while checkvar < maxvar: # is set to < as maxvar is 1 to high for the index of var
#output.append("%02d" % number)
i =ord(var[checkvar]) - 64 # Gets postional value of i
i = ("%02d" % i)
if (checkvar + 1) < maxvar:
j =ord(var[(checkvar + 1)]) - 64 # Gets postional value of i
j = ("%02d" % j)
i = str(i) + str(j) #'Adds' the string i and j to create a new i
li.append(int(i))
checkvar = checkvar + 2
print li
正如你所看到的那样,两个变量i和j首先被视为字符串,在前面添加一个0任何单个数字(作为字符串)。然后将这些变量组合成一个四位数字(仍然是一个字符串)。在程序的后期,创建的数字用于pow功能。 AS ints删除任何前导零。
As you can see the two variables i and j are first treated as string to add a 0 in front of any single digit numbers (as string). These variables then are combined to make a four digit number (still as a string). Later in the program the number created are used in a pow function. AS ints remove any leading zeros.
我的问题:是否可以强制python保持int的前导零。我已经并继续在线搜索。
My question: Is it possible to force python to keep the leading zero for ints. I have and continuing to search online.
编辑
为了帮助我已经包含加密部分的人程序。这就是问题所在。在上面的代码中创建的变量通过pow()函数传递。由于这不能处理字符串,我必须将变量转换为丢失前导零的整数。
TO help people I have included the encrpytion part of the program. This is where the problem lies. The variables created in the above code are passed through a pow() function. As this can't handle strings i have to convert the variables to ints where the leading zero is lost.
#a = li[]
b=int(17)#pulic = e
c=int(2773)#=n
lenli=int(len(li))
enchecker = int(0)
#encrpted list
enlist = []
while enchecker < lenli:
en = pow(li[enchecker],b,c)#encrpyt the message can only handle int
enlist.append(int(en))
enchecker = enchecker + 1
print enlist
推荐答案
概念前导零是一个显示概念,而不是数字概念。您可以在数字上放置无数个前导零而不更改其值。由于它不是数字概念,因此不会与数字一起存储。
The concept of leading zeros is a display concept, not a numerical one. You can put an infinite number of leading zeros on a number without changing its value. Since it's not a numeric concept, it's not stored with the number.
当您将数字转换为字符串时,您必须确定需要多少个零。如果你愿意,你可以单独保留这个号码。
You have to decide how many zeros you want when you convert the number to a string. You could keep that number separately if you want.
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