I demo ECDSA public/private keys with digital signatures using Streamlit… The private key gets generated, and stays private. The public key is given to the person who want’s to verify the message. Using the public key plus the signed message they can be sure that the only the owner of the matching private key signed […]
This article describes a Python script that demonstrates how to efficiently process text data, create embeddings, and upsert the embeddings into a Qdrant database using Python. Overview In today’s era of big data and machine learning, efficient text processing and vectorization are crucial for various natural language processing (NLP) tasks. The provided Python script showcases […]
In this article we will look at OrderedDict and Counter Use an OrderedDict to sort an existing dictionary such as the one below: How to sort a Python dictionary Enclose the dictionary with OrderedDict(sorted(dict.items()) Note: you can also add in “reverse” if you want the opposite sort order: How to remove a key:value pair from […]
Enum, short for “enumerate” is a robust way for us to enforce a strict set of options in Python. For example a fixed choice of Aeroplane Manufacturers and each choice manufacturers matches a model name. Let’s look at the example below and see we can do this can be done in practice. Example Code Pass […]
Let’s look at how to create complete documentation for your entire Python project using Sphinx Here is a guide to how to document a very small project, with 2 directories “src” and “docs” where all the source code is in “src” and the Sphinx specific files go inside “docs”. You’ll be able to view each […]
A Python generator is a “lazy Iterator” – a function that is a memory efficient way of providing an object to loop through We can define a Python generator function just like a normal function. This article will show some simple examples to illustrate how easy they are to use and how effective they can […]
If you want to learn about Data Analysis with Pandas and Python and you’re not familiar with Kaggle, check it out! Time to read article : 5 mins TLDR; We show how to use idxmax and apply with Pandas Introduction Here we will look at some functions in Pandas which will help with ‘EDA’ – […]
A common task is to track competitors prices and use that information as a guide to the prices you can charge, or if you are buying, you can spot when a product is at a new lowest price. The purpose of this article is to describe how to web scrape Amazon. Using Python, Scrapy, MySQL, […]
You may want to scrape Amazon for information about books about web scraping! We shorten what would have been a very very long selector, by using “contains” in our xpath : response.xpath(‘//*[contains(@class,”sg-col-20-of-24 s-result-item s-asin”)]’) The most important thing when starting to scrape is to establish what you want in your final output. Here are the […]
