python Archives - Petamind https://petaminds.com/tag/python/ A.I, Data and Software Engineering Mon, 11 Oct 2021 20:16:07 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://petaminds.com/wp-content/uploads/2019/09/ic_launcher.png python Archives - Petamind https://petaminds.com/tag/python/ 32 32 Automate Nat gateway deletion with lambda https://petaminds.com/automate-nat-gateway-deletion-with-lambda/ https://petaminds.com/automate-nat-gateway-deletion-with-lambda/#respond Tue, 05 Oct 2021 10:19:42 +0000 https://petaminds.com/?p=3217 Since NAT gateway is not cheap, in some cases, we don’t need to keep NAT Gateway running all the time. It is a good practice to automate the removal of the NAT gateway after finishing your task. This article will show how to implement a lambda function to remove the NAT gateway and associated Elastic […]

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]]> https://petaminds.com/automate-nat-gateway-deletion-with-lambda/feed/ 0 Asteroid Collision Solution – Leetcode coding challenge https://petaminds.com/asteroid-collision-solution-leetcode-coding-challenge/ https://petaminds.com/asteroid-collision-solution-leetcode-coding-challenge/#respond Fri, 02 Oct 2020 01:57:00 +0000 https://petaminds.com/?p=2845 The following asteroid collision problem is from Leetcode. The problem We are given an array asteroids of integers representing asteroids in a row. For each asteroid, the absolute value represents its size, and the sign represents its direction (positive meaning right, negative meaning left). Each asteroid moves at the same speed. Find out the state of the […]

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]]> https://petaminds.com/asteroid-collision-solution-leetcode-coding-challenge/feed/ 0 Top programming languages to learn 2020-2021 https://petaminds.com/top-programming-languages-to-learn-2020-2021/ https://petaminds.com/top-programming-languages-to-learn-2020-2021/#comments Thu, 30 Jul 2020 22:38:00 +0000 https://petaminds.com/?p=2475 “What is the best programming language to learn” is generally not a good question. A language should bind to a purpose, developing environment. Set it aside, popular languages often come with trending jobs. Here is the list of top 7 programming languages to consider in 2020 and 2021. 1.  Python The programming language continues to […]

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]]> https://petaminds.com/top-programming-languages-to-learn-2020-2021/feed/ 2 Advanced Python: Object operations and comparisons https://petaminds.com/advanced-python-object-operations-and-comparisons/ https://petaminds.com/advanced-python-object-operations-and-comparisons/#respond Wed, 22 Jul 2020 22:53:16 +0000 https://petaminds.com/?p=2536 In many cases, it is convenient to perform mathematical operations on objects rather than numerical values. Python classes have the ability to emulate the behaviour of numeric values to support operations like addition and subtraction. You can override many more to support number-like functionality. Numeric functions In the following table, the right column contains expressions that cause these […]

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]]> https://petaminds.com/advanced-python-object-operations-and-comparisons/feed/ 0 Advanced Python: classes String and computed attribute https://petaminds.com/advanced-python-classes-string-and-computed-attribute/ https://petaminds.com/advanced-python-classes-string-and-computed-attribute/#respond Wed, 15 Jul 2020 02:48:33 +0000 https://petaminds.com/?p=2448 This article demonstrates more advanced features of Python classes and their customisation. Specifically, how enum objects are created, class to strings, and computed attribute. Class string values A string is typically an informal representation of the object. However, it’s just a nicely in human-readable form. Python provides 2 common methods, i.e. str() and repr(). We can customise the […]

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]]> https://petaminds.com/advanced-python-classes-string-and-computed-attribute/feed/ 0 Advanced python: comprehension https://petaminds.com/advanced-python-comprehension/ https://petaminds.com/advanced-python-comprehension/#respond Wed, 08 Jul 2020 22:38:00 +0000 https://petaminds.com/?p=2459 In this article, we’ll learn about a Python language construct known as comprehensions for creating a new sequence based on existing one but its syntax is more human-readable than lambda functions. These can be applied to lists, sets, and dictionaries.  REVIEW Lambda and map Lambda is an anonymous function (function without name). Let have a quick […]

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]]> https://petaminds.com/advanced-python-comprehension/feed/ 0 Advanced python: collections https://petaminds.com/advanced-python-part-3/ https://petaminds.com/advanced-python-part-3/#respond Mon, 29 Jun 2020 01:01:42 +0000 https://petaminds.com/?p=2450 In part 2, we introduced advanced python knowledge with built-in functions and other useful tools for sequence iteration, data transformation. Advanced python part 3 will continue with collections to manipulate our data. Named tuple Suppose we want to define a data structure to represent a geometric point on a typical x and y-axis. We could easily do […]

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]]> https://petaminds.com/advanced-python-part-3/feed/ 0 Advanced python part 2 https://petaminds.com/advanced-python-part-2/ https://petaminds.com/advanced-python-part-2/#respond Wed, 17 Jun 2020 22:28:48 +0000 https://petaminds.com/?p=2441 In part 1, we introduced advanced string, bytes manipulation in Python. This article covers some advanced python knowledge with built-in functions and other useful tools for sequence iteration, data transformation. Useful built-in functions Use any() to return true if any of the sequence values are true Use all() to return true only if all values […]

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]]> https://petaminds.com/advanced-python-part-2/feed/ 0 Advanced python: Styling, Boolean, String and bytes https://petaminds.com/advanced-python-part-1/ https://petaminds.com/advanced-python-part-1/#comments Sun, 14 Jun 2020 22:49:54 +0000 https://petaminds.com/?p=2432 Let get some more advanced python techniques, tools, libraries. Python coding style It is quite common for beginner to skip the coding style and conventions in any programming language. But when you have a chance to revisit your code or others’ code, you will soon recognise how important of following coding conventions. To learn more, […]

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]]> https://petaminds.com/advanced-python-part-1/feed/ 1 Create and distribute your python package https://petaminds.com/create-and-distribute-your-python-package/ https://petaminds.com/create-and-distribute-your-python-package/#respond Wed, 26 Feb 2020 02:29:00 +0000 https://petaminds.com/?p=2323 This is a quick guide for create and generate distribution package of your python project so that others can install, import and use in their projects. Prerequisites: You will need the following tools installed in your computer: Python (2.x/3.x) Pip API key for uploading your package to distribution platform, such as test.pypi.org. After install python, […]

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