Python Application Development Tutorial

  • 01 Dec 2020
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Django , Development , App

Python is an interpreted, high-level, and general-purpose programming language. Python's design philosophy emphasizes code readability with its notable use of significant whitespace.

Python is often used as a support language for software developers, to build control and management, testing, and in many other ways.

Python is a beautiful language. It’s easy to learn and fun, and its syntax (the rules) is clear and concise. Python is a popular choice for beginners, yet still powerful enough to back some of the world’s most popular products and applications from companies like NASA, Google, IBM, Cisco, Microsoft, Industrial Light & Magic among others.

Python Application Development Tutorial

from flask import Flask

app = Flask(__name__)


def hello():

return "Hello World!"

if __name__ == "__main__":

Line 1 imports Flask

Line 2 instantiates Flask with app variable, using the __name__ attribute

Line 4 sets up a route / for your index, or default, page. When a user goes to locahost:5000/, you can set up a particular code to be triggered

Line 5 creates a function called hello

Line 6 returns the string Hello World! to the user

Line 7tests to make sure the right script is being run

Line 8 runs the application from the app variable we initialized so that the user can visit the web application by going to localhost

Web Development

Web development is the umbrella term for conceptualizing, creating, deploying, and operating web applications and application programming interfaces for the Web.

Importance of web development

The Web has grown a mindboggling amount in the number of sites, users, and implementation capabilities since the first website went live in 1989. Web development is a concept that encompasses all the activities involved with websites and web applications.

How does Python fit into web development?

Python can be used to build server-side web applications. While a web framework is not required to build web apps, it's rare that developers would not use existing open-source libraries to speed up their progress in getting their application working.

Python is not used in a web browser. The language executed in browsers such as Chrome, Firefox, and Internet Explorer is JavaScript. Projects such as pyjs can compile from Python to JavaScript. However, most Python developers write their web applications using a combination of Python and JavaScript. Python is executed on the server-side while JavaScript is downloaded to the client and run by the web browser.

Web development resources

To become an experienced web developer you need to know the founding principles that the web is built with, such as HTTP requests and responses, client (typically web browsers) and server (web servers such as Nginx and Apache architectures, HTML, CSS, and JavaScript, among many other topics. The following resources provide a range of perspectives and when combined together should get you oriented in the web development world.

Python Mobile App  Development

Python can be used for the development of APIs for mobile applications. Mobile app developers can create apps with this programming language as it is capable of running on several major operating systems.

Applications written in Python

Here are some of the python application examples.

  • Youtube
  • Google
  • Instagram
  • Reddit
  • Spotify
  • Dropbox
  • Quora

Top 10 uses of Python

  1. Web Development
  2. Data Science Solutions
  3. Machine Learning Frameworks
  4. Python for Natural Language Processing
  5. Video Game Development
  6. Entertainment Applications
  7. Computational and Scientific Operations
  8. Graphic Application UI
  9. Blockchain-Enabled Contracts
  10. Finance Fintech Platform

Artificial Intelligence Projects with source code in Python

  • TensorFlow
  • Keras
  • Theano
  • Scikit-learn
  • Chainer
  • Caffe
  • Gensim
  • PyTorch
  • Shogun
  • Pylearn2
  • Nilearn
  • Numenta
  • PyMC
  • DEAP
  • Annoy

Python data science web app

As it stands now, Python is one of the most widely used programming languages in the field and most data scientists use python for data science. This dynamic language is easy to learn and read, so it's an optimal choice for beginners.

Python can be used to build server-side web applications. While a web framework is not required to build web apps, it's rare that developers would not use existing open-source libraries to speed up their progress in getting their application working. Python is not used in a web browser.

 Best site to learn data science

  • Coursera
  • EdX
  • Udacity
  • IBM
  • California Institute of Technology

Machine Learning with Python

Python is widely considered as the preferred language for teaching and learning Ml (Machine Learning). Few simple reasons are:

  • It’s simple to learn. As compared to c, c++, and Java the syntax is simpler and Python also consists of a lot of code libraries for ease of use.
  • Though it is slower than some of the other languages, the data handling capacity is great.
  • Open Source! – Python along with R is gaining momentum and popularity in the Analytics domain since both of these languages are open source.
  • Capability of interacting with almost all the third-party languages and platforms.

Best Python Training Framework

Django is the most popular Python framework. It is an open-source framework that makes things very fast and scalable. The framework is regularly updated to match the latest versions of Python.

Can you build apps with python?

Yes, it is possible to build iPhone apps using Python. Python is an open-source programming language that is great for creating web and mobile apps.

How Python is used in software development?

Python is often used as a support language for software developers, to build control and management, testing, and in many other ways.

What are the applications of Python?

  • Web Development.
  • Game Development.
  • Machine Learning and Artificial Intelligence.
  • Data Science and Data Visualization.
  • Desktop GUI.
  • Web Scraping Applications.
  • Business Applications.
  • Audio and Video Applications

How is Python used in Artificial Intelligence?

Python plays a vital role in AI coding language by providing it with good frameworks like sci-kit-learn: machine learning in Python, which fulfills almost every need in this field and Data-Driven Documents.

What is the scope of data science with Python?

Python for Data Science is a favorite tool since it is a flexible and open-sourced language. Python's massive libraries are for data manipulation and easy to learn.

Why is Python so popular in machine learning?

Python's extensive selection of machine learning-specific libraries and frameworks simplify the development process and cut development time. Python's simple syntax and readability promote rapid testing of complex algorithms and make the language accessible to non-programmers.

What is the best OS for Python programming?

Ubuntu is the best OS for Python programming.

Is Python used for web development?

Python can be used to develop practically any kind of software or web application but not used in a web browser.

Are there any Python projects with source code sites?

  • Tic Tac Toe project.
  • Fake News Detection project.
  • Parkinson's Disease Detection project.
  • Color Detection project.
  • Speech Emotion Recognition project.
  • Breast Cancer Classification project.
  • Age and Gender Detection project.
  • Chatbot project.

Which language is better for app development? Python or Java?

Java may be a more popular option, but Python is widely used. People from outside the development industry have also used Python for various organizational purposes. Similarly, Java is comparatively faster, but Python is better for lengthy programs

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