WebNov 6, 2012 · According to Python 2.7's docs: file.seek (offset [, whence]) Set the file’s current position, like stdio‘s fseek (). The whence argument is optional and defaults to …
io — Core tools for working with streams — Python 3.11.3 …
WebSets the file position indicator for the file referenced by stream.The new position, measured in bytes from the beginning of the file, is obtained by adding offset to the position specified by whence. In general, it is allowed to seek past the end-of-file; if data is then written, reads in any unwritten region between the end-of-file and the sought position will yield bytes … So far weve encountered two ways of writing values: expression statements and the print() function. (A third way is using the write() method of file objects; the standard output file can be referenced as sys.stdout. See the Library Reference for more information on this.) See more The str() function is meant to return representations of values which are fairly human-readable, while repr() is meant to generate … See more In text mode, the default when reading is to convert platform-specific line endings (\n on Unix, \r\n on Windows) to just \n. When writing in text … See more Normally, files are opened in text mode, that means, you read and write strings from and to the file, which are encoded in a specific encoding. If encoding is not specified, the default is platform dependent (see … See more It is good practice to use the with keyword when dealing with file objects. The advantage is that the file is properly closed after its suite finishes, even if an exception is raised at some … See more even multiples of 3 starting with 12
我想在播放器实现seek操作 - CSDN文库
WebThe values for WHENCE are 0 to set the new position in bytes to POSITION; 1 to set it to the current position plus POSITION; and 2 to set it to EOF plus POSITION, typically negative. For WHENCE you may use the constants SEEK_SET , SEEK_CUR , and SEEK_END (start of the file, current position, end of the file) from the Fcntl module. WebApr 4, 2024 · func (f *File) Seek(offset int64, whence int) (ret int64, err error) Seek sets the offset for the next Read or Write on file to offset, interpreted according to whence: 0 means relative to the origin of the file, 1 means relative to the current offset, and 2 means relative to the end. It returns the new offset and an error, if any. WebW3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. even midtown east