The previous post introduced essential approaches to creating threads and processes in Python. In this post, a more detailed focus on interfaces to concurrent and parallel programming in Python will be described, specifically working with a pool of threads or processes via the `multiprocessing`

and `concurrent.futures`

modules.

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# Tag Archives: programming

## Concurrent and Parallel Programming in Python (Part 1)

In this post, different approaches to concurrent and parallel programming in Python will be presented on concise code snippets. We will use three standard Python modules, namely `threading`

, `multiprocessing`

and `concurrent.futures`

. This post will not cover the `subprocess`

module and the new `asyncio`

module.

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## Speeding Up Symmetric Matrix With Cython

In the previous post, a Python implementation of a symmetric matrix was described. This implementation saves approximately 50% of memory space. However, when compared with a matrix created via the `numpy`

module, the average access time for our implementation was much worse than the average access time for the `numpy`

matrix. In this post, we will speed up the access time by using Cython.

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## Implementing a Symmetric Matrix in Python

In computer science, symmetric matrices can be utilized to store distances between objects or represent as adjacency matrices for undirected graphs. The main advantage of using a symmetric matrix in comparison with a classic matrix lies in smaller memory requirements. In this post, a Python implementation of such a matrix is described.

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