What is Python?
Python is an interpreted, object-oriented,
high-level programming language with dynamic semantics. Its
high-level built in data structures, combined with dynamic typing and dynamic
binding, make it very attractive for Rapid Application Development, as well as
for use as a scripting language to connect existing components together.
Let us in detailed about the above highlighted
words:
Interpreted:
The compiler converts high-level language into low-level language using various phases. A character stream inputted by the customer goes through multiple stages of compilation which at last will provide target language.
An interpreter is a program that executes the programming code directly instead of just translating it into another format. It translates and executes programming language statements one by one. An interpreter takes less time to interpret a source program as distinguished by a compiler.
Object-oriented:
OOP is a programming pattern
that is built around objects or entities, so it's called object-oriented
programming.
In the above picture names of different dogs
comes under class dog. So object oriented means dealing with different
properties of class like its height,weight,colour,breed and stamina etc.
High level:
A high-level language is any programming
language that enables development of a program in a much more user-friendly
programming context and is generally independent of the computer's hardware architecture.
*combining all the above features python was
built.
What can Python do?
Clearly, Python is a popular and in-demand
skill to learn. But what is python programming used for? We’ve already
briefly touched on some of the areas it can be applied to, and we’ve expanded
on these and more Python examples below. Python can be used for:
1. AI and machine learning
Because Python is such a stable, flexible, and
simple programming language, it’s perfect for various machine learning (ML) and
artificial intelligence (AI) projects.
2. Data analytics
Much like AI and machine learning, data
analytics is another rapidly developing field that utilises Python programming.
At a time when we’re creating more data than ever before, there is a need for
those who can collect, manipulate and organise the information.
3. Data visualisation
Data visualisation is another popular and
developing area of interest. Again, it plays into many of the strengths of
Python. As well as its flexibility and the fact it’s open-source, Python
provides a variety of graphing libraries with all kinds of features.
4. Programming applications
You can program all kinds of applications
using Python. The general-purpose language can be used to read and create file
directories, create GUIs and APIs, and more. Whether it’s blockchain
applications, audio and video apps, or machine learning applications, you can
build them all with Python.
Python is a popular programming language for several reasons. Here are some of the most important ones:
- Easy to read, use, and maintain: Python’s code is easy to read and understand, making it a great choice for beginners and experienced programmers alike.
- Supports multiple programming paradigms: Python supports object-oriented, procedural, and functional programming paradigms, making it a versatile language.
- Compatible with major platforms and systems: Python can be used on all major operating systems and architectures.
- Large standard library: Python has a large standard library that includes many useful modules and functions.
- Cost-effective approach: Python is free to use and distribute, making it a cost-effective choice for many projects.
- Simplifies the complexities of software development: Python’s simplicity and ease of use make it a great choice for simplifying complex software development tasks.
- Adoption of Test-Driven Development: Python has a strong culture of test-driven development, which helps ensure the quality and reliability of the code.
Python Syntax contrasted(compared) with other
programming dialects or languages.
Python’s syntax is often contrasted with other
programming languages such as Java and C++. One of the main differences between
Python and these languages is that Python has a more concise and readable
syntax. For example, in Python, there is no need for semicolons or curly
braces, which are required in Java and C++1. This makes Python code easier to
read and write, especially for beginners.
Python is also dynamically typed, meaning that
the data type of a variable is determined at runtime, whereas in languages like
Java and C++, the data type must be explicitly specified when declaring a
variable1. This can make Python code more flexible and easier to write.
Here is a table comparing the code for printing even numbers in Python, Java, and C:
|
Language |
Code |
|
Python |
for i in range(0,
10, 2): print(i) |
|
Java |
for(int
i=0; i <=10; i++){ if( i%2 == 0 ) System.out.println ( i + " es
pares"); else System.out.println ( i + " es impares"); } |
|
C |
#include
<stdio.h> int main() { for (int i = 0; i < 10; i += 2) { printf("%d\\n", i); } return 0; } |
In Python, you can use the range function to generate a sequence of numbers with a specified step size. In this case, we use a step size of 2 to generate even numbers. The print function is then used to print each number.
In Java, you can use a for loop with an increment of 2 to generate even numbers. The System.out.println method is then used to print each number.
In C, you can also use a for loop with an increment of 2 to generate even numbers. The printf function is then used to print each number.
Python Install
Visit www.python.org to download the python software
This will take you to the page where the different Python releases for Windows can be found. Since I am using a 64bit system, I will select “Windows x86-64 executable installer”.
If you want to save the installation file in a different location, click on Customize installation; otherwise, continue with Install Now. Also, select the checkbox at the bottom to Add Python 3.7 to PATH.
Once the installation is complete, the below pop-up box will appear: Setup was successful.
Now that the installation is complete, you need to verify that everything is working fine.
As you can see we printed the '"hello world'" code and printed in the shell we can write anything and print it on the shell.