The Ultimate Guide to Web Scraping with Python

Web scraping is a powerful technique that allows us to extract data from websites and use it for various purposes. From monitoring competitors' prices to extracting data for academic research, web scraping has a wide range of applications.

Python is one of the most popular programming languages for web scraping, thanks to its robust libraries and packages. In this article, we'll discuss everything you need to know about web scraping with Python.

1. What is Web Scraping?

Web scraping is the process of extracting data from websites. It involves writing a program that can automatically navigate through web pages and extract relevant information. This information can be saved in various formats, such as CSV, JSON, or Excel.

2. Why Use Python for Web Scraping?

Python is a popular programming language for web scraping because it has a wide range of libraries and packages designed specifically for this purpose. Some of the most commonly used libraries for web scraping in Python are BeautifulSoup, Scrapy, and Requests.

Additionally, Python is a relatively easy language to learn, so even beginners can get started with web scraping quickly.

3. How Does Web Scraping Work?

Web scraping involves sending requests to a website, parsing the HTML or XML code of the page, and extracting relevant information. Here's a step-by-step overview of how it works:

- Send a request to the website using Python's Requests library.

- Parse the HTML or XML code of the page using a library like BeautifulSoup.

- Identify the data you want to extract by locating specific HTML tags or CSS classes.

- Extract the data using Python code.

- Save the extracted data in a format of your choice.

4. Best Practices for Web Scraping

Web scraping can be a controversial topic, and it's important to follow best practices to ensure you're not breaking any laws or terms of service. Here are some best practices to keep in mind:

- Always check the website's terms of service before scraping data from it.

- Use a user agent to identify your scraper and avoid being blocked.

- Don't scrape too frequently or aggressively, as this can overload the website's servers.

- Respect websites' robots.txt files, which indicate which pages can and cannot be scraped.

- Don't scrape sensitive or personal information.

5. Examples of Web Scraping Applications

Web scraping can be used for a wide range of applications. Here are some examples:

- Scraping product prices from e-commerce websites to monitor competitors' prices.

- Extracting data from social media platforms for sentiment analysis.

- Scraping news articles for academic research.

- Collecting job postings from multiple websites for job searches.

- Scraping real estate listings for market analysis.

In conclusion, web scraping with Python is a valuable skill that can be used for a wide range of applications. By following best practices and using the right libraries and packages, you can extract valuable data from websites and use it to inform your business or research.

Source: https://nettyfy.com/the-ultimate-guide-to-web-scraping-with-python/

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Debug Node.js Applications Effectively

 

Overview of NodeJS

NodeJS is an asynchronous, event-driven runtime environment for JavaScript. It is cross-platform (works with Windows, Linux, Unix, Mac OS X, and other systems), lightweight, effective, and freely accessible to everybody. JavaScript code is executed on the server side by NodeJS to create dynamic web page content.

It is based on the V8 JavaScript Engine for Chrome. NodeJS can add, remove, and update data in your database and is used to build dynamic web pages. Using NodeJS, you can create dynamic http servers outside of the browser using your JavaScript expertise. Asynchronous APIs, a lightning-fast engine, a single threaded model, and no buffering are just a few of the fascinating characteristics of NodeJS.

How to Write NodeJS Code

Let’s begin writing NodeJS code. Create a JavaScript file and launch NodeJS. An application using NodeJS requires three parts. Let’s explore this now

Importing necessary modules: The NodeJS module is loaded using the need directive.

var http = require(“http”);

The returned HTTP instance will be kept in this http variable.

Creating a server instance: A server instance is made using the HTTP.createServer() function.

Request/Response: Your local machine address will receive the response. Here is a comprehensive NodeJS Hello World example.

The hello world file should have a JavaScript extension. Open the NodeJS command prompt now and type

The server operating message will be displayed on the terminal via node helloWorld.js.

Click the link to read more: https://nettyfy.com/how-to-debug-node-js-application-efficiently/

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Cloud Transformation and its Benefits

As cloud-based solutions remain an integral part of business processes, cloud transformation has become an increasingly important problem that nearly every company must address. Even companies that are already using cloud-based solutions they aren’t aware of the meaning of cloud transformation and how it affects the company.

Cloud transformation is the top priority for every business to stay up with the rapid pace of business. Businesses are eager to replace IT infrastructures to cloud-based solutions to speed up business processes and remain in the game.

What is cloud transformation?

Cloud transformation refers to the procedure of moving tasks to the cloud, including apps, data, and software programs.

IT infrastructure can be moved to the cloud, in line with the digital transformation goals.

Cloud transformation allows enterprises to swiftly respond to challenges and adopt new methods of working, which incorporate digital transformation of technology.

Benefits of Cloud Transformation?

1. Streamlined Operational Efficiency

In a rapidly evolving virtual world it is becoming increasingly possible to access important information from any place and at any moment is now the standard. Cloud-based systems facilitate availability of data which allows collaboration and communications in real-time and improving analytics through the elimination the silos of information. In addition, the cloud allows IT personnel to concentrate on innovations that can propel the business forward, rather than on routine maintenance of infrastructure.

2. Agility

A company’s maturity in cloud transformation is measured by its ability to rapidly adapt to market conditions and threats to its competitive position. Cloud transformation enables businesses to quickly consume new resources and technologies and effectively apply them to the market.

3. Prototype Faster and Smarter

The process of enabling digital transformation requires an organisation to alter its business processes numerous times. Cloud computing offers end-users an unbeatable platform through which they can rapidly develop, test and then deploy their apps on various mediums and channels in the process of transformation without the need to set up a complicated infrastructure. Cloud computing services provide crucial computing infrastructure, resources, and platforms that are available which can save your company from the expense and time of investing in a variety of IT resources. There are also a lot of tools for prototyping that allow users to test their applications using the cloud. For instance, here’s how can make use of AWS Free Tier. AWS Free Tier to get an experience in AWS Platform. AWS Platform.

4. Less to Manage

Moving infrastructure, applications or platforms to the cloud can result in massive savings in the data center. Utilizing virtualization tools, creating and releasing additional environments is easy and quick. A shared model implies that servers that previously hosted applications can be taken down or relocated. This is a possibility across different environments, thereby increasing the advantages.

5. Stronger Data Security

Security of data is a major problem for companies that are moving to cloud computing. For some companies it may appear counterintuitive that moving data offsite can be safer. However, the reverse is true cyber criminals are able to more easily exploit attack vectors, including malware and phishing emails to access data that is stored on your computer.

If you have the proper methods and strategies put in place cloud storage, the data on cloud storage is likely to be secure by encryption and other layers of security. This makes it hard hackers to get access. Alongside security and encryption cloud hosting also provides numerous backups of crucial data to minimize the possibility of losing data or incurring cost-intensive downtime in case of a catastrophe.

6. Easy Data Backup & Restore

With the increasing frequency of security breaches and cyberattacks backup and restore of data is now a major requirement for companies.

Cloud computing services can allow you to keep important data offsite, generate several copies and then restore it when needed. Although traditional restoration and backup options exist but they’re not cost-effective and aren’t easy to scale.

Cloud-based backups of data help to store a lot of data in cloud storage and increases storage capacity without the need for hardware. A majority of cloud backup service providers guarantee that your data is secured when you upload or download. They also satisfy the requirements for data security and compliance.

7. Improved Customer Service

Improved service delivery is another advantage from cloud-based transformation. It forces businesses to enhance the customer experience, which is an important competitive advantage in the marketplace. It also requires the company to develop a more comprehensive plan to ensure the security and performance of data that extends over and above cloud services. It is the obligation of the company to seek solutions to manage the quality of every new cloud service, and also align this with the cloud strategy and strategy.

Wrapping Up

Cloud transformation lets businesses improve internal processes while increasing performance, scalability and profit.

It’s an integral part of digital transformation that is in sync with strategies to modernize the business processes.

A cloud-based transformation can be the beginning point to a modern, flexible business environment, which includes the ability to move and remain secure.

It offers a streamlined transition to the future, providing the long-term protection of your business and better continuity.

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Top 15 JavaScript Tips and Tricks to Level Up Your Code

The market share of JavaScript has risen to new levels in the last 5–10 years, especially since ES6 was launched in June 2015, making it the most popular programming language for web development, allowing developers to create both front-end UI and back-end logic.

Most of the functions and applications that make the Internet indispensable to modern life are coded in some form of JavaScript. While JavaScript is not the only client-side scripting language on the Internet, it was one of the first and it is still the most widely used. Many developers believe that JavaScript is inefficient and finicky, so they have made many improvements to the language over the years and because of this, every programmer searching for JavaScript Tips and Tricks to level up code.

Convenient and useful techniques to reduce the lines of code and pace up your Dev Work!

In this tutorial, as the best JavaScript development company in USA and India, we will point out a few important JavaScript best practices so you don’t have to learn it the hard way. Get ready to level to your code!

1. DECLARE AND INITIALIZE ARRAYS

We can initialize array of particular size with default values like “”, null or 0. You might have used these for the 1-D array but how about initializing 2-D array/matrix?

2. SORTING ARRAY OF STRING, NUMBERS OR OBJECTS

We have inbuilt methods sort() and reverse() for sorting strings but How about numbers or array of objects?

Let’s check out sorting hacks for Numbers and Objects in Increasing and Decreasing order as well.

3. EASY EXCHANGE VARIABLES

You probably swap the two variables using a third variable temp. But this tip will show you a new way to exchange variables using destructuring.

4. GET A RANDOM ITEM FROM AN ARRAY

5. GET A RANDOM NUMBER IN A SPECIFIC RANGE

This code snippet can be useful when trying to generate fake data for testing purposes, such as a salary between min and max.

6. GENERATE AN ARRAY OF NUMBERS WITH NUMBERS FROM 0 TO MAX

7. FILTER UNIQUE VALUES

The Set object type was introduced in ES6, and along with …, the ‘spread’ operator, we can use it to create a new array with only the unique values.

Before ES6, isolating unique values would involve a lot more code than that!

This trick works for arrays containing primitive types: undefined, null, boolean, string and number . (If you had an array containing objects, functions or additional arrays, you’d need a different approach!)

8. A STRING TRIM FUNCTION

The classic trim function of Java, C#, PHP and many other language that remove whitespace from a string doesn’t exist in JavaScript, so we could add it to the String object.

A native implementation of the trim() function is available in the recent JavaScript engines.

9. APPEND AN ARRAY TO ANOTHER ARRAY

10. REMOVE DUPLICATES

You probably encounter an array with duplicate data and use a loop way to get rid of these duplicates. This tip will help you remove duplicates in an easy way without using any loop.

11. ROUNDING NUMBER TO N DECIMAL PLACE

12. CONVERT DECIMAL TO BINARY OR HEXA

We can use some in-built methods like .toPrecision() or .toFixed() to achieve many functionalities while solving problems.

13. GET THE LAST ITEM(S) IN AN ARRAY

The array method slice() can take negative integers, and if provided it will take values from the end of the array.

14. MAKE ARRAY EMPTY

This quick tip will save the time that you put to empty an array. I will show you the quick method to empty in an array using the JavaScript length method.

15. USING STRING REPLACE FUNCTION TO REPLACE ALL THE VALUES

We specialize in delivering end-to-end software design & development services and have hands-on experience with popular front-end and back-end languages like JavaScript. Our back-end and front-end engineers also help in improving security, reliability, and features to make sure your business application scales and remain secure.

FINAL WORDS

In this article, we shared with you the top 15 tips for improving JavaScript performance. If you go ahead and implement all these changes, you will notice a significant improvement in the speed of your JavaScript web development and applications.

ABOUT NETTYFY TECHNOLOGIES

Nettyfy Technologies specialize in delivering end-to-end software design & development services and have hands-on experience with popular front-end and back-end languages like JavaScript. Our back-end and front-end engineers also help in improving security, reliability, and features to make sure your business application scales and remain secure.

Original Source: http://nettyfy.com/top-15-javascript-tips-and-tricks-to-level-up-your-code/

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Things To Consider While Outsource Mobile App Development Company

Outsource Mobile App Development is one of the most discussed topics of the recent past. Companies worldwide are active in this business strategy to create their business by modification the operational prices & manifold the standard of services. Several businesses are applauding the advantages of outsourcing app development. As an outsource mobile app development company in USA and India, we are discussing things to consider while choosing it.

If your business offers less luxury to rent regular experts, or what if you’re operating a business single-handed – source app development may be a reliable and straightforward means that comes with many benefits.

Why Outsource Mobile App Development Company? 

We can say it is convenient and cost-effective if you achieve finding the proper app development partner. it’s smart to source your business app project from skilled, and intimate with developers where they exist, instead of disbursement time negotiating for hiring talented professionals.

Talented Team of Developers

Talent is the main factor that drives any organisation. If you are in a location that is hard to find a skilled workforce, then outsourcing to a well-established app development company is a realistic option for you. The companies looking for talent will go for outsourcing app development to achieve the best outputs.

Efficient Saving Of Time 

In this busy world, time is crucial for all. Offshore App Developers deliver around the clock services, and you furthermore may have the advantage of various time zones. The skilled app development groups work to complete the comes before time while not compromising the service quality. Time-bound services are the priority for all notable offshore app development companies. Outsourcing App Development Services helps in effectively saving time, beside money. Your business will profit vastly with the reduced development time.

Help You In Attaining Business Goals

When you are operating exhaustingly to retain your customers, the corporate goals take a backseat. It becomes troublesome to understand your aims. By outsourcing such vital services, you’ll provide your customers a superb product.

This may offer you enough time to form ways to attain your business goals. it’ll guide us to outshine within the world of constant technological changes by getting in the market of mobile technology.

Work Flexibility Provides Amazing Results

The company that’s providing outsourcing services will work around your schedule. they’re going to deliver apps development services in keeping with your convenience. Moreover, they conform to add all shifts in keeping with their client’s preferences.

Their proficient employees with intensive expertise in software development services are economical in handling even complicated requirements. once work flexibility is combined with brilliance in technology, it becomes the most effective option.

Sectors Catered

A company with a diverse portfolio is always better than companies with a very narrow range of sectors served. Think Nettyfy Technologies is one such company that has handled clients from multiple sectors, small and big. Your choice should be based on how diversified their client list is. Have they served only big companies, or do they also have startups in their portfolio? Working around these questions can help you select the right company

Guarantee Best Quality

You can blindfolded trust in your outsourcing company. They are established in the market with an aim to provide excellence. It is obvious that they will provide the highest quality of performance to retain their clients.

Impeccable Security

It is important to safeguard your mobile app after development. Particularly if it is a business app, it is vulnerable to hacking, leading to loss of sensitive data and information. Here outsourcing to a mobile app development company can offer you the best methods to ensure your app security.

Regular Technical Support And Maintenance

Both technical support and maintenance services are key to any mobile app’s long-term success. If any issue arises when the app is live on Google Play or the App store, and the users report that, the development team should fix it to save your brand’s image in the market and offer a hassle-free experience to your customers.

Final Words

Undoubtedly, outsourcing mobile app development is the most mindful thing to do. It is a feasible option that will provide innumerable advantages in the long term as well as the short term. With an optimum business partner, you can achieve your business goals on a global level. Make sure to hire mobile apps developers from renowned and reputed companies to get the best services.

Original Source Link: https://nettyfy.com/things-to-consider-while-outsource-mobile-app-development-company/

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Top 10 JavaScript Tips For Beginners To Learn For Better Programming

As a Top JavaScript Development Company in USA and India, we are listing out Top JavaScript Tips For Beginners To Learn For Better Programming. JavaScript is one of the most popular programming languages in the modern world. It is predominately used for web development, particularly the creation of interactive front-end elements, but it also has some other use cases. JavaScript is undoubtedly one of the best programming languages to learn. You pretty much have to learn JavaScript if you want to work in any sort of web development field.

JavaScript. Some amazing features of JavaScript are as follows:

● Lightweight, interpreted language.
● Easily embedded with languages like HTML, CSS, and Java.
● Also works as a client-side scripting language, which helps in creating dynamic web pages.

If you want to become a web developer, you need to start practicing your JavaScript skills as soon as possible. To help you get started, I’ve put together a list of 10 Javascript Tips For Beginners To Learn For Better Programming.

1. How To Check Multiple Conditions?

Normally, we check more than one condition like:

For code fast and better way we check multiple condition using includes() or indexOf():

2. Easy Way To Convert An Object To An Array

3. How To Redirect a Web Page In Js?

The below JavaScript code snippet used to perform http redirect on a given URL.

4. Why Splice() Is Better Than Delete To Remove Element From Array?

Splice() remove element completely from the array.

Delete replace element with empty instead of removing it from Array. Delete should use to remove properties of Object

5. How to convert Number To String And String To Number Without Using Any Function?

With Function

Normally, to convert Number to String, we use toString():

To convert String to Number, we use Number():

Without Function

But to code fast we can convert number to string without function:

To convert String to Number without function:

6. What Is Self-Invoking Function?

While we use a self-invoking function in script we don’t need to call, it runs automatically when page loads or parent function is called.

It’s good practice to use a self-invoking function rather than a normal function.

We just need to wrap functions with parenthesis.

7. How Can We Reduce The Complexity Of A For Loop With Iterators?

To reduce code complexity while we are working with iterators, we can use for…of loop instead of normal for loop.

While we use for .. of loop we don’t need to pay attention to length of built-in iterators like array, object, etc.

8. Which Is The Easy Way To Merge Two Arrays?

To merge two arrays simply use comma operator( , ).

By using this you can insert one array element into another one.

9. How To Easily Truncate Or Empty An Array?

If you know the original length of the array then you can easily truncate the array by re-define it’s length.

You can also use slice() to remove elements, it works even faster.

10. How Can We Find Only Relevant Data From An Array/Object ?

IWe can find mandatory data from an array/object using filter().

Filter() tests each element of the array and returns a new array with the elements which pass the test.

Wrapping-Up

There you go! If you want to start a career as a web developer, building your own JavaScript projects is the best way to learn the language. Working on projects of your own helps you understand how the syntax works and how you can solve different problems with JavaScript.

Original Source: https://nettyfy.com/top-10-javascript-tips-for-beginners-to-learn-for-better-programming/

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