`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(),
这使我们对其结构有一个清晰的理解: usageFileHandler+async_write(file_path: str, text: str)+async_read(file_path: str) : strAsyncMain+main() 在此类图中,FileHandler类中包含两个主要方法:async_write和async_read,而AsyncMain用于执行这些方法。通过这种结构,我们可以直观地看到异步操作是如何组织在一起...
asyncdefwrite_to_file(filename,data):asyncwithaiofiles.open(filename,'a')asf:# 异步写入数据到文件pass 1. 2. 3. 4. 3. 异步写入数据 现在,我们可以开始异步地写入数据到文件中。下面是相关代码示例: asyncdefwrite_to_file(filename,data):asyncwithaiofiles.open(filename,'a')asf:awaitf.write(dat...
importasyncioasyncdeffunc():print('来玩呀')response=awaitasyncio.sleep(2)print('结束',response)asyncio.run(func()) 示例2: importasyncioasyncdefothers():print('start')awaitasyncio.sleep(2)print('end')return'返回值'asyncdeffunc():print('执行协程函数内部代码')response=awaitothers()print("IO请求...
importasyncioasyncdefwrite_file(file_path, content):try:asyncwithasyncio.open_file(file_path,'w')asfile:awaitfile.write(content)print("文件写入成功")exceptOSError:print("写入文件失败")asyncdefmain():awaitwrite_file("myfile.txt","Hello, world!")asyncio.run(main()) ...
在该示例中,我们定义了两个协程函数read_file和write_file,分别用于读取和写入文件。我们使用aiofiles模块中的async_open函数来打开文件,并通过async with语句来管理文件对象的生命周期,确保文件在使用完成后正确关闭。 在读取文件时,我们使用await关键字等待文件读取操作完成,并通过f.read方法来获取文件内容。在写入文件...
async with aiofiles.open('example.txt', mode='r') as f: content = await f.read() print(content) # 运行异步函数 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.auto({ getData: function (callback) { setTimeout(function(){ console.log('1.1: got data'); callback(); }, 300); }, makeFolder: function (callback) { setTimeout(function(){ console.log('1.1: made folder'); callback(); }, 200); }, writeFile: ['getData', 'makeFolder'...
asyncdeffetch(session,url,filename):asyncwith session.get(url)asresponse:content=awaitresponse.text()withopen(filename,'w',encoding='utf-8')asf:f.write(content)print(f"Saved {filename}")asyncdefmain():urls=['https://httpbin.org/get','https://httpbin.org/user-agent']os.makedirs('output...
Let’s take the immersive approach and write some async IO code. This short program is the Hello World of async IO but goes a long way towards illustrating its core functionality: Python #!/usr/bin/env python3 # countasync.py import asyncio async def count(): print("One") await async...