程序挂起了！（也许是印刷版？）

Question

所以，我对Python很在行。我决定制作一个制作素数的程序。我知道可能有一个内置函数可以做到这一点，但我决定自己去做。你知道吗

number = 1
numlist = list()
for x in range (0, 1000):
    numlist.append("")
    print "Created list entry " + str(x)
while True:
    number = number + 1
    if number % 2 != 0:
        numscrollerA = 1
        numscrollerB = 1
        while numscrollerA <= number:
            if float(number) / float(numscrollerA) == float(int(number)):
                numlist[numscrollerA] = "true"
            if float(number) / float(numscrollerA) != float(int(number)):
                numlist[numscrollerA] = "false"
            numscrollerA = numscrollerA + 1
        while numscrollerB <= number:
            if numscrollerB != 1 and numscroller != number and numlist[numscrollerB] == "true":
                primestatus = "false"
            else:
                primestatus = "true"
        if primestatus == "true":
            print number

我得到了1000次“Created list entryx”。然后程序就挂起了。你知道吗

Answer 1

   while numscrollerB <= number:
        if numscrollerB != 1 and numscroller != number and numlist[numscrollerB] == "true":
            primestatus = "false"
        else:
            primestatus = "true"

在这个循环中不增加numscrollerB，所以它无限运行。无论如何，你应该用“for loop”：

for numscrollerB in range(1, number+1):
    pass  # do something