为什么我的嵌套while循环无法正常工作

Question

在Python中使用程序打印出前1000个素数（2除外）。所有我能得到的输出是数字3.不明白我的循环结束的地点或时间。在编程方面非常新颖。任何人都可以帮忙吗？

primeCounter = 1 
candidate = 3 

while primeCounter < 1000: 
    isPrime = True 
    counter = 2 
    while counter < candidate: 
     if candidate%counter == 0: 
      isPrime = False 
     else: 
      counter = counter + 1 

    if isPrime == True: 
     print candidate 
     primeCounter = primeCounter + 1 

    candidate = candidate + 1 

Answer 1

primeCounter = 1 
candidate = 3 

while primeCounter < 1000: 
    isPrime = True 
    counter = 2 
    while counter < candidate: 
     if candidate%counter == 0: 
      isPrime = False 
      break # <<<<<<<<<<<<<<<<< break here, or the loop will go infinite 
     else: 
      counter = counter + 1 

    if isPrime == True: 
     print candidate 
     primeCounter = primeCounter + 1 

    candidate = candidate + 1 

Answer 2

一旦您设置isPrime到False，你不会再增加counter，这样你就永远走不出内while循环。

Answer 3

你在块

while counter < candidate: 
    if candidate%counter == 0: 
     isPrime = False 

问题，如果没有候选人％计，你得到无限循环。