# 以二进制方式读取文件file_path='example.bin'withopen(file_path,'rb')asfile:byte_content=file.read()# 读取文件内容print(byte_content)# 输出字节流 1. 2. 3. 4. 5. 6. 在上面的代码中,我们使用with上下文管理器来处理文件,确保在读取完成后文件会被自动关闭。file.read()方法会将整个文件的内容...
string file_path BYTE_STREAM --o| FILE : contains } SOCKET { string host int port BYTE_STREAM --o| SOCKET : receives } 在这个ER图中,我们可以看到字节流(BYTE_STREAM)与文件(FILE)和Socket(SOCKET)之间的关系。 ByteStream+byteArray data+int length+decode()FileReader+string filePath+readBytes()...
使用模式为 rb 或wb 的open() 函数来读取或写入二进制数据。比如: # Read the entire file as a single byte string with open('somefile.bin', 'rb') as f: data = f.read() # Write binary data to a file with open('somefile.bin', 'wb') as f: f.write(b'Hello World') __EOF__ ...
f.write(string) 将一个字符串写入文件,如果写入结束,必须在字符串后面加上"\n",然后f.close()关闭文件 四、文件中的内容定位f.read() 读取之后,文件指针到达文件的末尾,如果再来一次f.read()将会发现读取的是空内容,如果想再次读取全部内容,必须将定位指针移动到文件开始: f.seek(0) 这个函数的格式如下(...
open('myfile'): #文件迭代器一行一行的读取 open('filename.txt', encoding='latin-1') #Python3. Unicode文本文件(string字符串) open('filename.txt', 'rb') #Python3.0二进制byte文件(bytes字符串) 注:文件数据在脚本中一定是字符串,而写入方法如f.write()不会替我们坐任何字符串转换工作,需要我们...
通常情况下,你会用到open()的第2个参数mode,它用字符串来表示,你想要用什么方式,来打开文件。默认值是r代表用read-only只读的方式,打开文件: withopen('dog_breeds.txt','r')asreader:# Further file processing goes here 除了r之外,还有一些mode参数值,这里只简要的列出一些常用的: ...
In [29]: help(file.read) Help on method_descriptor: read(...) read([size]) -> read at most size bytes, returned as a string. If the size argument is negative or omitted, read until EOF is reached. Notice that when in non-blocking mode, less data than what was requested may be...
performed on the file according to the opening mode. Note that when the file is opened as a text file, read and write in string mode, using the encoding used by the current computer or the specified encoding; When the file is opened in binary format, the read and write mode is byte ...
# 打开二进制文件并读取内容withopen('image.png','rb')asfile:byte_array=file.read()# 将字节数组转换为字符串string=byte_array.decode('utf-8')# 输出结果print(string) 1. 2. 3. 4. 5. 6. 7. 8. 9. 在上述示例中,我们首先使用open()函数打开一个名为image.png的二进制文件,并以二进制模式...
>>> with open('dog_breeds.txt', 'r') as reader: >>> # Read and print the entire file line by line >>> line = reader.readline() >>> while line != '': # The EOF char is an empty string >>> print(line, end='')