Question

我正在尝试创建一个程序，从用户接收2个数字，并使用不同的线程来测试每个，这是我到目前为止，我知道我很好，但我发现这个线程的东西非常困难

#!/usr/bin/python

import threading 

class PrimeNumber(threading.Thread): 
  def __init__(self, number): 
    threading.Thread.__init__(self) 
    self.Number = number

  def run(self): 
    counter = 2 
    while counter*counter < self.Number: 
      if self.Number % counter == 0: 
       print "%d is no prime number, because %d = %d * %d" % ( self.Number,      self.Number, counter, self.Number / counter) 
         return 
         counter += 1 
         print "%d is a prime number" % self.Number
threads = [] 
while True: 
input1 = long(raw_input("Enter first number: ")) 
if input < 1: 
    break 

thread1 = PrimeNumber(input1) 
threads += [thread1] 
thread1.start() 

input2 = long(raw_input("Enter second number: ")) 
if input < 1: 
    break 

thread2 = PrimeNumber(input2) 
threads += [thread2] 
thread2.start() 


for x in threads: 
x.join()

Answer 1

我对您的代码做了一些修改。

第二个输入也需要一个while循环。 break在循环之外没有意义。
我将您input1 < 1的{{1}}转换为input1 > 1，因为您希望在有有效输入时退出循环，而不是输入无效时。
我在第一个while循环中正确缩进了代码。
我将<thread>.start行移至for循环。

这就是现在的样子：

import threading 

class PrimeNumber(threading.Thread): 
    def __init__(self, number): 
        threading.Thread.__init__(self) 
        self.Number = number

    def run(self): 
        counter = 2 
        while counter*counter < self.Number: 
            if self.Number % counter == 0: 
                print "%d is not a prime number, because %d = %d * %d" % ( self.Number,      self.Number, counter, self.Number / counter) 
                return 
            counter += 1 
        print "%d is a prime number" % self.Number

threads = [] 
while True: 
    input1 = long(raw_input("Enter first number: ")) 
    if input1 > 1: 
        break 

thread1 = PrimeNumber(input1) 
threads += [thread1] 

while True:
    input2 = long(raw_input("Enter second number: ")) 
    if input2 > 1: 
        break 

thread2 = PrimeNumber(input2) 
threads += [thread2] 


for x in threads:
    x.start()
    x.join()

你在问题标题中说你要检查五个号码。而不是复制你输入的特定代码段并再为它创建一个线程三次，把它放在for循环中，如下所示：

threads = []
for i in range(5):
    while True: 
        inputNum = long(raw_input("Enter first number: ")) 
        if inputNum > 1: 
            break 

    thread = PrimeNumber(inputNum) 
    threads += [thread]

我有一个程序来检查五个数字是否为素数，但它无法正常工作

1 个答案: