Question

我对Python很新，并且我正在为一个类做一个程序的问题。 main（）和create_file工作，但是当它到达read_file时，解释器就在那里。程序正在运行，但一切都没有发生。

答案可能很简单，但我看不出来。提前感谢您的帮助。

我正在使用IDLE（Python和IDLE v.3.5.2）

以下是代码：

import random

FILENAME = "randomNumbers.txt"

def create_file(userNum):

    #Create and open the randomNumbers.txt file
    randomOutput = open(FILENAME, 'w')

    #Generate random numbers and write them to the file
    for num in range(userNum):
        num = random.randint(1, 500)
        randomOutput.write(str(num) + '\n')

    #Confirm data written
    print("Data written to file.")

    #Close the file
    randomOutput.close()

def read_file():

    #Open the random number file
    randomInput = open(FILENAME, 'r')

    #Declare variables
    entry = randomInput.readline()
    count = 0
    total = 0

    #Check for eof, read in data, and add it
    while entry != '':
        num = int(entry)
        total += num
        count += 1

    #Print the total and the number of random numbers
    print("The total is:", total)
    print("The number of random numbers generated and added is:", count)

    #Close the file
    randomInput.close()

def main():

    #Get user data
    numGenerate = int(input("Enter the number of random numbers to generate: "))

    #Call create_file function
    create_file(numGenerate)

    #Call read_file function
    read_file()

main()

Answer 1

你在函数中有一个无限while循环，因为entry在循环期间永远不会改变。

处理文件中所有行的Pythonic方法如下：

for entry in randomInput:
    num = int(entry)
    total += num
    count += 1

Python函数没有运行，解释器没有给出任何错误

1 个答案: