Python module Stringio/cstringio (memory file)

1. What is Stringio/cstringio?

This module provides a class in which an instance of this class can be read and written as a file, in fact a string cache, or a memory file, to read and write.

Stringio and file objects have a common parent class iobase, so the method is basically consistent, and Stringio can be seen as a memory file.

Think about it, Stringio may be the equivalent of Java StringBuffer or StringBuilder ... Whether it can also be used as a write file cache, when I want to write a lot of bits and pieces of content when I write the content to Stringio, when the Stringio is finished I read it again write to disk, this will not be able to implement the cache write O (∩_∩) o haha ~

In py2.x, Cstringio is a C-language version of Stringio, it has a slightly better performance, but py3.x has no cstringio.

2. How to use

The use of Stringio is similar to normal file objects, here is a simple example:

#! /usr/bin/pythonfrom io import stringioif __name__ = = ' __main__ ':    f = Stringio ()    f.write (' first\n ')    f.write (' second\n ')    F_content = F.getvalue ()    print (f_content)

Output:

Firstsecond

Resources:

1. https://docs.python.org/2/library/stringio.html

Python module Stringio/cstringio (memory file)