'r' open for reading (default) 'w' open for writing, truncating the file first 'a' open for writing, appending to the end of the file if it exists 'b' binary mode 't' text mode (default) '+' updating (reading and writing) 'x' exclusive creation, failing if file existsFirst...
""" Uses heuristics to guess whether the given file is text or binary, by reading a single block of bytes from the file. If more than 30% of the chars in the block are non-text, or there are NUL ('\x00') bytes in the block, assume this is a binary file. """ block = fileo...
File writtenFile readWritingReading 代码示例 下面是一个完整的示例,展示了如何使用byte读写二进制文件。 # 写入二进制文件withopen("binary_file.bin","wb")asfile:data=bytes([0x48,0x65,0x6c,0x6c,0x6f])# Hello的ASCII码表示file.write(data)# 读取二进制文件withopen("binary_file.bin","rb")asfil...
Reading the last N lines in a file Reading N Bytes From The File Reading and Writing to the same file Reading File in Reverse Order Reading a Binary file Access Modes for Reading a file To read the contents of a file, we have toopen a filein reading mode. Open a file using the bui...
openhook支持用户传入自定义的对象读取方法。fileinput 内置了两个勾子函数: fileinput.hook_encoded(encoding,errors=None)使用gzip和bz2模块透明地打开 gzip 和 bzip2 压缩的文件 fileinput.hook_compressed(filename,mode)使用给定的 encoding 和 errors 来读取文件。
-rb(reading binary):读取二进制文件,只读。 -r+\rb+(reading&writing):在原基础上多了writing。 2)文件读取函数解析: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 # 第一步: fh = open(r"D:\OtSoftware\再别康桥.txt", "r", encoding="utf-8") # 打开文件资源 # 第二步:读/...
'r' open for reading (default)---只读模式打开文件,不能写; 'w' open for writing, truncating the file first ---只写模式打开文件,不能读,并且每次写的时候都会清空之前的部分; 'x' create a new file and open it for writing---只写模式,文件不存在则会创建文件,如果文件已经存在则会报错; 'a...
Reading a File In Python, you can read a file using theopen()function. The following code example demonstrates how to read a file in Python: file = open('example.txt', 'r') data = file.read() print(data) Reading a File Line-By-Line ...
pickle.dump(obj, file, [,protocol])序列化对象,并将结果数据流写入到文件对象中。参数protocol是序列化模式,有三个值可选:0 为ASCII,1为旧式二进制,2为新式二进制,默认值为0。 pickle.load(file)反序列化对象。将文件中的数据解析为一个Python对象。
b'Binary file contents' >>> p = Path('my_text_file') >>> p.write_text('Text file contents') 18 >>> p.read_text() 'Text file contents' 更多详情可参见pathlib模块[1]。 fileinput 如果你只想读取一个文件,使用open()。如果需要实现文件列表的批量循环操作,不妨使用本模块。