Python Dictionary Comprehension: A Fast and Flexible Way to Build Dictionaries
Introduction Dictionaries are a very powerful, Pythonic way to store data.They allow us to associate a key with a value, and access them as needed.This makes it easy to store data where, for example, we need to associate a string with a number.For instance, if we need to store data related to names and associated phone numbers, then the dictionary is the best data structure to do so.
Introduction Python, as one of the most versatile and widely-used programming languages, boasts a plethora of built-in data structures that make it an excellent choice for developers of all skill levels.One such data structure is the list.It is one of the most powerful and flexible data structures in Python.
How to check whether one string contains another in Python
Trey Hunner Python 3.7-3.11*
What's the best way to check whether one string contains another string in Python?What we're looking for Let's say we have two strings, part and whole.We'd like to know whether part is a substring of whole.That is, we'd like to know whether the entire part string appears within the whole string.
8 ODSC Europe Training Sessions to Boost Your Data Science Career
Ready to fill in some of your knowledge gaps and build new skills?Check out the hands-on training and bootcamp sessions that are coming to ODSC Europe next month.AI-Powered Algorithmic Trading with Python Dr. Yves J. Hilpisch | The AI Quant | CEO The Python Quants & The AI Machine, Adjunct Professor of Computational Finance This session will cover the essential Python topics and skills that will enable you to apply AI and Machine Learning (ML) to Algorithmic Trading.
Two great quotes on data, domain modeling, programming, and design
Here are two great quotes on programming, data modeling (domain modeling), algorithms, and design that I was just reminded of, thanks to this Twitter question: Linus Torvalds: "Bad programmers worry about the code.Good programmers worry about data structures and their relationships."Fred Brooks: "Show me your flowchart and conceal your tables, and I shall continue to be mystified.
I'm always curious about how people think, and these days I'm most interested in how functional programmers think about programming problems.Along those lines I found a good blog post (tutorial) titled, "Thinking Functionally with Haskell", and these are my notes from that post:
Python dataclasses, a powerful feature that simplifies the process of creating classes for storing and manipulating data.Dataclasses are a feature introduced in Python 3.7 as part of the standard library module called dataclasses.We'll explore the concept step by step with easy-to-understand explanations and coding examples.
NIMH Data Archive (NDA) Data Submission OH Webinar
.shtml 1. The National Institute of Mental Health (NIMH) Data Archive (NDA) provides a secure platform for data submission and sharing of mental health research data. 2. NDA offers a comprehensive suite of data management and sharing tools, including an open-source data submission and
I wasn't going to write a CSV parser, really... - JSON Indepth
The library csv42 applies the following general techniques to get a good performance.First important thing is to not optimize based on your assumptions, but based on measurements.In general, it is best to write your code optimized to be simple to read, understand, and maintain.Only when there turns out to be a performance issue, you can effectively pinpoint the bottleneck and try to improve the performance.
In this blog post, we look at the ECMAScript proposal "Iterator helpers" by Gus Caplan, Michael Ficarra, Adam Vandolder, Jason Orendorff, Kevin Gibbons, and Yulia Startsev.It provides utility methods for working with iterable data: .map(),.filter(),etc.The style of the proposed API clashes with the style of the current iteration API.
GitHub - giffeler/undoh: This Typescript module provides an undo class that can be used to implement a simple undo/redo mechanism.
Many programs, especially those with user interaction, have functions to undo or redo processing steps.Implementation usually requires providing a mechanism that produces an opposite of a particular action.These functions have an impact on an underlying data structure.This Typescript module provides an undo class that can be used to implement a simple undo/redo mechanism in programs.
10 Best Free System design Courses for Software Engineer Interviews in 2022
Hello guys, if you are preparing for System Design Interview or just want to improve your Software design skills and looking for best free resources like tutorials and free online courses then you have come to the right place.
OpenAI to go Open Source - Elon Musk was a 'Huge Idiot' Mojo Risin'
By: Richi Jennings on Welcome to The Long View-where we peruse the news of the week and strip it to the essentials.Let's work out what really matters.This week: Sources say it's an open source future for OpenAI, and improving AI perf with Mojo. 1. OpenAI FOSS LLM Rumor First up this week: An anonymous source told The Information's Jon Victor that OpenAI will release an open source version of its large language model (LLM).
List vs Dictionary in Python - PythonForBeginners.com
Python lists and dictionaries are two of Python's most used data structures.In this article, we will discuss list vs dictionary in Python to compare definition, syntax, mutability, and performance.Python List vs Dictionary Summary Following are some of the major differences between a Python list and a dictionary.
Tuple vs List in Python: Syntax, Definition, and Performance - PythonForBeginners.com
In Python, tuples and lists are similar data structures apart from mutability.This article discusses Python tuple vs list to compare the syntax, definition, mutability, and performance of both data structures.Tuple vs List Definition A Python list is a mutable data structure that we use to store elements in a sequential manner.
Pandas DataFrame to List in Python - PythonForBeginners.com
Python lists and dataframes are two of the most used data structures in python.While we use python lists to handle sequential data, dataframes are used to handle tabular data.In this article, we will discuss different ways to convert pandas dataframe to list in python.Convert Pandas DataFrame to a List of Rows Each row in a pandas dataframe is stored as a series object with column names of the dataframe as the index and the values of the rows as associated values.
Pandas Assign New Columns to a DataFrame - PythonForBeginners.com
Pandas dataframes are the data structures that we use to handle tabular data in python.This article discusses different ways to assign new columns to pandas dataframe using the assign() method.The Pandas assign() Method The assign() method is used to assign new columns to a pandas dataframe.It has the following syntax.
Create a Dictionary From a String in Python - PythonForBeginners.com
Strings and dictionaries are the two most used data structures in Python.We use strings for text analysis in Python.On the other hand, a dictionary is used to store key-value pairs.In this article, we will discuss how to create a dictionary from a string in Python.Create a Dictionary From a String Using for Loop To create a dictionary from a string in Python, we can use a python for loop.
Pandas Dataframe Index in Python - PythonForBeginners.com
Therefore, you should first store the index column into a new column of the dataframe before changing the index column.Otherwise, you will lose data stored in the index column from your dataframe.
How can you assign a variable in Python?An equals sign assigns in Python In Python, the equal sign (=) assigns a variable to a value: This is called an assignment statement.We've pointed the variable count to the value 4. We don't have declarations or initializations Some programming languages have an idea of declaring variables.
API with NestJS #106. Improving performance through indexes with Prisma
The bigger our database, the more we need to care about its performance.A common way of improving it is through indexes.Therefore, this article introduces the idea of indexes and implements them through Prisma.You can find the code from this article in this repository.Introduction to indexes In one of the recent articles, we've created a posts table.
Marcin Wanago Blog - JavaScript, both frontend and backend
API with NestJS #82. Introduction to indexes with raw SQL queries
As our database grows, we need to put more and more emphasis on performance.A popular approach to dealing with this problem is by implementing indexes.In this article, we look into doing that with raw SQL in a project that does not use ORM.Introducing indexes So far, in this series, we've created a table for storing posts.
Marcin Wanago Blog - JavaScript, both frontend and backend
What's a Python Sequence? [Python Data Structure Series #2]
You started your journey through Python's main data structure categories in the first article in this series, which dealt with iterables.In this article, you'll focus on another term you'll often see in Python articles and documentation.You'll explore the Python sequence.'Sequence' is not the name of a single data type in Python.
Convert XML to YAML in Python - PythonForBeginners.com
XML and YAML are two of the most used file formats in software engineering.Sometimes, we need to convert an XML file to YAML or vice versa.This article discusses how to convert XML string or file to YAML format in Python.What is XML Format?XML is a markup language used for encoding documents in a human and machine-readable format.
Microsoft published a beta release of TypeScript 5.0, the company's strongly typed JavaScript variant, on January 26.The new release aims to modernize decorators for class customization.Decorators, an upcoming ECMAScript feature, allow for customizing classes and their members in a reusable way, Microsoft noted in a blog post announcing the release.
This post is a showcase of data wrangling techniques in Python, using glom.If you haven't heard of glom, it's a data transformation library and CLI designed for Python.Think HTML templating, but for objects, dicts, and other data structures.It's been almost five years since the first release of glom.
Identity Crisis: How Modern Applications Generate Unique Ids
TL;DR: Use so you don't need to worry about all this identifier complexity.It's 7:15 am and customer support is swamped.We just got featured on Good Morning America, and a whole bunch of first time customers are bumping into bugs.A customer would fill a shopping cart with items, check out, pay for the items, and then be presented with an order receipt with all the wrong items!
We're happy to announce the release of tapir 1.0!After almost 4 years of development and multiple 0.x releases, the declarative, type-safe web endpoints library has reached the important milestone of a stable release.libraryDependencies += "com.softwaremill.sttp.tapir"%% "tapir-core" % "1.0.0" import sttp.tapir._
What's a Python Iterable? [Python Data Structure Series #1]
You're familiar with data structures such as lists, dictionaries, tuples, sets, and more.You may even know about the similarities and differences between their behaviours.But how comfortable are you with the terms used for the groups they belong to, like iterables, sequences, collections, and containers?
Pandas Series to DataFrame in Python - PythonForBeginners.com
Pandas series and dataframes are the two data structures that we use extensively to manipulate sequential or tabular data in Python.Sometimes, we need to convert one or multiple series objects to a dataframe in Python.This article discusses how to convert a pandas series to a dataframe in python.Convert Pandas Series to DataFrame Using the to_frame() Method We can convert a pandas series to a dataframe using the to_frame() method.
malloc() function in C Programming Language | Codementor
The malloc function in C is used to dynamically allocate memory at runtime.This means that you can request memory from the operating system when your program is running, instead of having to specify the amount of memory you need before the program starts.In simple terms, malloc is a function that allows you to create a block of memory of a specified size and returns a pointer to the first byte of that block.
Convert XML to JSON in Python - PythonForBeginners.com
We use different file formats to store and transmit data generated from software systems.Sometimes, we need to convert an XML file to JSON to communicate between two software.This article discusses how to convert an XML file or string into JSON format in Python.What is XML?XML stands for Extensible Markup Language.
The structuredClone function is a relatively new addition to the JavaScript language that was introduced in ECMAScript 2019 (ES10).It is similar to the JSON.stringify and JSON.parse methods in that it allows developers to serialize and deserialize objects, but with some important differences.The structuredClone function creates a deep copy of an object and its properties, including any child objects and functions, while preserving their type and behavior.
JavaScript, like many other programming languages, provides built-in support for common data structures such as arrays, lists, and dictionaries.In this blog post, we will discuss how to implement some of the most common data structures in JavaScript.Arrays Arrays are one of the simplest and most commonly used data structures.
7 Github Repositories to Become a Pro JavaScript Developer
What is JavaScript?JavaScript is a lightweight, interpreted programming language.It is designed for creating network-centric web and mobile applications.It is complementary to and integrated with Java.JavaScript is very easy to implement because it is integrated with HTML.It is open and cross-platform.
Before directly jumping to code, learn this... | Codementor
Before learning any programming language, it is beneficial to have a solid understanding of the following concepts:
Algorithms: Understanding basic algorithms, such as sorting and searching, can help you understand how to design efficient and effective programs.Data Structures: Understanding basic data structures, such as arrays, linked lists, and trees, can help you understand how to organize and manipulate data in your programs.
Building A 500 Line API Regression Test Suite - PyBites
This article appeared as a Pybites email first.If you like it consider joining our friends list for weekly Python, developer and (!) mindset content ...Last year I built a cool API to post code images using our pybites-carbon tool.It will store the tip code in a database and store the code image in an S3 bucket.
In this article I will give you 10 tips for cleaner code.Hope this helps improve your Python code. 1.Smaller units.Break long functions (methods) into multiple smaller ones that do one thing ( SRP or "Single-responsibility principle").This will make your code more modular and easier to test.
Objects, Classes, and OOP - In JavaScript there's a special data type called an object.It lets you store named data points for easy access along with functions.
REST, GraphQL, and gRPC are the 3 most popular API development technologies in modern web applications.However, choosing one isn't easy since they all have unique features.
Immutability is the state in which nothing changes, nothing "mutates" and we can map that concept when speaking about coding, to data structures never changing.
Data Structures in JavaScript: Singly Linked Lists
Singly linked lists (sometimes known as single linked lists) provide a way of storing data in order.They're similar to arrays and, therefore, often get compared with one another.
Have you ever wondered how does Medium recommend blogs to read or how does a platform with millions of users tells if a username is available or taken?
I conceptualized "Python for Everyone" to help women who want to start their careers in technology.After the introduction sessions, it was time for us to learn real "Technology".
Sunrise: A Python Turtle Animation Using Named Tuples
You may think the Python turtle module isn't useful for anything."It's just for kids", is what many think of it.However, this module allows you to explore and experiment with many areas of Python.
Find the Index of Max Value in a List in Python - PythonForBeginners.com
Lists in python are one of the most used data structures.In this article, we will discuss different ways to find the index of max value in a list in python.
'Hit a wall': Why TV advertising's measurement currency change won't happen in this year's upfront cycle
For as quickly as Nielsen's grip on the TV measurement market appears to have loosened in the last year, the measurement provider will likely retain its hold on this year's upfront.
In Python, a set is a data structure that stores unordered items.The set items are also unindexed.Like a list, a set allows the addition and removal of elements.