asyncdefmain(file_path):""" 主运行函数 """content=awaitread_file(file_path)# 等待并获取文件内容print(content)# 输出文件内容 1. 2. 3. 4. 现在我们可以使用asyncio.run()对主函数进行调用。 if__name__=="__main__":file_to_read='example.txt'# 指定要读取的文件asyncio.run(main(file_to_...
`r`,encoding=`utf-8`)asfile:content=file.read()# 使用正则表达式提取所有单词words=re.findall(r`\b\w+\b`,content.lower())# 使用 Counter 统计词频word_counts=Counter(words)# 按词频降序排序sorted_word_counts=sorted(word_counts.items(),key=lambdax:x[1],reverse=True)# 打印结果forword,coun...
在Python中,可以使用asyncio模块实现异步读取文件。下面是一个简单的示例代码: importasyncioasyncdefread_file(file_path):try:withopen(file_path,'r')asfile: content =awaitfile.read()returncontentexceptFileNotFoundError:print(f"File{file_path}not found.")returnNoneasyncdefmain():file_path ='example....
异步读取文件 下面是一个使用异步方式读取文件的示例代码: importasyncioasyncdefread_file(filename):withopen(filename,'r')asfile:content=awaitfile.read()returncontentasyncdefmain():content=awaitread_file('example.txt')print(content)asyncio.run(main()) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 1...
# 异步读取单个文件asyncdefread_file_async(filepath):asyncwithaiofiles.open(filepath,'r')asfile:returnawaitfile.read()asyncdefread_all_async(filepaths):tasks=[read_file_async(filepath)forfilepathinfilepaths]returnawaitasyncio.gather(*tasks)# 运行异步函数asyncdefmain():filepaths=['file1.txt','...
asyncio.run(read_file()) 异步写入文件 以下是一个异步写入文件的示例: python import aiofiles import asyncio async def write_file(): async with aiofiles.open('output.txt', mode='w') as f: await f.write('\ cn426.com \n') # 运行异步函数 ...
import timeimport datetimeimport asyncioasync def async_read_file():print("async读文件开始:",datetime.datetime.fromtimestamp(time.time()))await asyncio.sleep(20)print("async读文件完成:",datetime.datetime.fromtimestamp(time.time()))def computer():print("普通计算密集型任务:",datetime.datetime.fro...
jobs.append( pool.apply_async(process_wrapper,(nextLineByte)) ) nextLineByte = f.tell()#wait for all jobs to finishforjobinjobs: job.get()#clean uppool.close() Using seek we can move directly to the correct part of the file, whereupon we read a line into the memory and process it....
import trioasync def read_file_async(file_path):async with await trio.open_file(file_path) as file:async for line in file:print(line.decode().strip())async def main():await read_file_async("example.txt")trio.run(main) 在这个示例中,使用 Trio 的 open_file 函数异步打开文件,并使用异步...
time.sleep(1)asyncdef hello(url): #asyncdef关键字定义了异步函数asyncwith ClientSession()assession:asyncwith session.get(url)asresponse: # ClentSession类发起http请求 response=awaitresponse.read() # await关键字加在需要等待的操作前面, response.read()等待request响应,耗时IOawaitwait() # await关键字加...