Python basic--file (file) method

The file object is created using the Open function, and the following table lists the functions commonly used by file objects:

Serial Number	Method and Description
1	File.close () closes the file. The file can no longer read and write after closing.
2	File.flush () Refreshes the internal buffer of the file, directly writes the data of the internal buffer to the file immediately, instead of passively waiting for the output buffer to be written.
3	The File.fileno () returns a file descriptor for an integer type (filename descriptor FD integer), which can be used in some underlying operations, such as the Read method of the OS module.
4	File.isatty () returns True if the file is connected to an end device, otherwise False is returned.
5	File.next () returns the next line of the file.
6	File.read ([size]) reads the specified number of bytes from the file, if none is given or is negative.
7	File.readline ([size]) reads the entire line, including the "\ n" character.
8	File.readlines ([sizeint]) reads all rows and returns a list, and if given sizeint>0, returns a row with a sum of approximately sizeint bytes, the actual read value may be larger than sizeint because the buffer needs to be populated.
9	File.seek (offset[, whence]) sets the current location of the file.
10	File.tell () returns the current location of the file.
11	File.truncate ([size]) truncates from the beginning of the first line of the file, truncates the file to size characters, no size indicates truncation from the current position, and all subsequent characters after truncation are deleted, where the line break under the Widnows system represents a 2-character size.
12	File.write (str) writes a string to the file without a return value.
13	File.writelines (Sequence) writes a list of sequence strings to the file and adds a newline character to each line if a line break is required.

Python basic--file (file) method