Python mmap: Doing File I/O With Memory Mapping

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Christopher Trudeau

41:38

98 View

595 - 01 - intro.mp4

03:11

595 - 02 - mem.mp4

08:08

595 - 03 - mmap.mp4

11:41

595 - 04 - ops.mp4

12:24

595 - 05 - shared.mp4

04:18

595 - 06 - sum.mp4

01:56

mmap.pdf

scripts.zip

Description

The Zen of Python has a lot of wisdom to offer. One especially useful idea is that “There should be one—and preferably only one—obvious way to do it.” Yet there are multiple ways to do most things in Python, and often for good reason. For example, there are multiple ways to read a file in Python, including the rarely used mmap module.

Python’s mmap provides memory-mapped file input and output (I/O). It allows you to take advantage of lower-level operating system functionality to read files as if they were one large string or array. This can provide significant performance improvements in code that requires a lot of file I/O.

In this video course, you’ll learn:

What You'll Learn?

What kinds of computer memory exist
What problems you can solve with mmap
How use memory mapping to read large files faster
How to change a portion of a file without rewriting the entire file
How to use mmap to share information between multiple processes

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Python

Christopher Trudeau

Instructor's Courses

Christopher has a passion for the Python language and writes for Real Python. He is a consultant who helps advise organizations on how to improve their technical teams. Christopher is a strong advocate for automation throughout the delivery process and the power of small teams with well defined goals.

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