执行程序没反应

完完全全跟着代码敲。但执行就是这样，空白。

qq_阳光_134 2019-06-27

源自：Python多线程 3-4 多进程中的锁

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2回答

提问者 qq_阳光_134 2019-06-29 00:01:32

import random
import time
from multiprocessing import current_process, Pool

def run(file_name,num):
with open(file_name,"a+",encoding="utf-8") as f:
now_process = current_process()
content = "{0} - {1} - {2}".format(
now_process.name,
now_process.pid,
num)
f.write(content)
f.write("\n")
time.sleep(random.randint(1,5))
print(content)
return "ok"

if __name__ == "__main__":
file_name = "t.txt"
p = Pool(2)
for i in range(20):
rest = p.apply(run,args=(file_name,i))
print("{0}-{1}".format(i,rest))

p.close()
p.join()

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好帮手慕美 #1

同学，你好。我这测试是没有问题的，有运行结果的。同学执行程序后可稍等下看是否有结果输出，或者同学可将pycharm重启后再运行下该程序。

2019-07-02 09:33:50

好帮手慕美 2019-06-28 10:32:58

同学，你好。部分代码无法判断具体是哪的问题，同学可将全部代码提供，方便更好的为同学解决问题。

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提问者 qq_阳光_134 #1

import random import time from multiprocessing import current_process, Pool def run(file_name,num): with open(file_name,"a+",encoding="utf-8") as f: now_process = current_process() content = "{0} - {1} - {2}".format( now_process.name, now_process.pid, num) f.write(content) f.write("\n") time.sleep(random.randint(1,5)) print(content) return "ok" if __name__ == "__main__": file_name = "t.txt" p = Pool(2) for i in range(20): rest = p.apply(run,args=(file_name,i)) print("{0}-{1}".format(i,rest)) p.close() p.join()

2019-06-29 00:00:43
提问者 qq_阳光_134 #2

import random import time from multiprocessing import current_process, Pool def run(file_name,num): with open(file_name,"a+",encoding="utf-8") as f: now_process = current_process() content = "{0} - {1} - {2}".format( now_process.name, now_process.pid, num) f.write(content) f.write("\n") time.sleep(random.randint(1,5)) print(content) return "ok" if __name__ == "__main__": file_name = "t.txt" p = Pool(2) for i in range(20): rest = p.apply(run,args=(file_name,i)) print("{0}-{1}".format(i,rest)) p.close() p.join()

2019-06-29 00:01:19