从一个文件中读取同一行的线程

Question

I'm trying to use threads with python, I'm pretty new to threads. I wanted the threads to read random lines from the same file but all the threads read the same line. So the file I'm trying to read has all the lines in email:pass:another_line format. I expected to read different lines from the same file with multiple threads but its reading the same line with multiple threads. So for example 1 thread will return line1, second thread will return line2 but its random lines.

import random
import threading

def email_pass_token():
    global email, pass2, token

    file = open("testing/pokens.csv").read().splitlines()
    acc_str = random.choice(file)

    num_lines = sum(1 for _ in file)
    print(num_lines)

    email = ":".join(acc_str.split(":", 1)[:1])

    pass2 = ":".join(acc_str.split(":", 2)[:2][1:])

    token = ":".join(acc_str.split(":", 3)[:3][2:])
email_pass_token()

def gen_acc():
    print(email, pass2, token)

threads = []
num_thread = input("Threads: ")
num_thread = int(num_thread)
for i in range(num_thread):
    t = threading.Thread(target=gen_acc)
    threads.append(t)
    t.start()

File Sample:

tqqe435ihwbta@oncemail.co.kr:#354946345e696$e30*417:another_line1
tkbzw543vwxzn@oncemail.co.kr:2e5548c543709!8@305-8(:another_line2
jcgeau43yphr@oncemail.co.kr:41c!954=7543cc^1#48fd_$*b5:another_line3
bqajs543qlqys@oncemail.co.kr:1f@e54d78^feb54355&6$50:another_line4
tqqeihw54bta@oncemail.co.kr:#3946345e696$e30*417:another_line5
tkbzwvwx543zn@oncemail.co.kr:2e58c5437709!8@305-8(:another_line6
jcgeauy453phr@oncemail.co.kr:41c!9=7543cc^1#48fd_$*b5:another_line7
bqajsqlq54ys@oncemail.co.kr:1f@ed78^feb53455&6$50:another_line8

Answer 1

You are not running the function for selecting line in the threads. What you are doing is you are running gen_acc in the threads which only prints the three variables email , pass2 and token . Your code for selecting lines resides email_pass_token which is called only once.

Answer 2

Here's one way you could do it. Note that this will not work if the password contains a colon. Also, I've hard-coded the number of threads but you get the idea.

import random
from concurrent.futures import ThreadPoolExecutor

FILENAME = 'testing/pokens.csv'
NTHREADS = 5

def myfunc():
    with open(FILENAME) as infile:
        lines = infile.readlines()
        line = random.choice(lines).strip()
        tokens = line.split(':')
        return ' '.join(tokens)

def main():
    with ThreadPoolExecutor() as executor:
        futures = []
        printable = set()
        for _ in range(NTHREADS):
            future = executor.submit(myfunc)
            futures.append(future)
        for future in futures:
            printable.add(future.result())
        for p in printable:
            print(p)

if __name__ == '__main__':
    main()