多线程问题:当count变为非零时创建文件，当count变为零时删除文件

import threading
import os

count = 0
lock = threading.Lock()

def create_file():
    global count
    # 创建文件的操作
    file_name = "file.txt"
    with open(file_name, "w") as file:
        file.write("This is a file created by the thread.")
    print("File created:", file_name)

def delete_file():
    global count
    # 删除文件的操作
    file_name = "file.txt"
    if os.path.exists(file_name):
        os.remove(file_name)
        print("File deleted:", file_name)

def thread_function():
    global count
    with lock:
        count += 1
        if count == 1:
            create_file()

    # 执行其他操作

    with lock:
        count -= 1
        if count == 0:
            delete_file()

# 创建多个线程并启动
threads = []
for _ in range(5):
    thread = threading.Thread(target=thread_function)
    thread.start()
    threads.append(thread)

# 等待所有线程执行完毕
for thread in threads:
    thread.join()