Category: Python

Python Tutorials

  • Python – Functions

    A Python function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reusing.

    A top-to-down approach towards building the processing logic involves defining blocks of independent reusable functions. A Python function may be invoked from any other function by passing required data (called parameters or arguments). The called function returns its result back to the calling environment.

  • Python – Control Flow

    Python program control flow is regulated by various types of conditional statements, loops, and function calls. By default, the instructions in a computer program are executed in a sequential manner, from top to bottom, or from start to end. However, such sequentially executing programs can perform only simplistic tasks. We would like the program to have a decision-making ability, so that it performs different steps depending on different conditions.

    Most programming languages including Python provide functionality to control the flow of execution of instructions. Normally, there are two type of control flow statements in any programming language and Python also supports them.

    Decision Making Statements

    Decision making statements are used in the Python programs to make them able to decide which of the alternative group of instructions to be executed, depending on value of a certain Boolean expression.

  • Python – History and Versions

    History of Python

    Python was developed by Guido van Rossum (a Dutch programmer) in the late 1980s and early nineties at the National Research Institute for Mathematics and Computer Science in the Netherlands.

    Python is derived from many other languages, including ABC, Modula-3, C, C++, Algol-68, SmallTalk, and Unix shell and other scripting languages. Guido van Rossum wanted Python to be a high-level language that was powerful yet readable and easy to use.

    Python is copyrighted. Like Perl, Python source code is now available under the GNU General Public License (GPL).

    For many uninitiated people, the word Python is related to a species of snake. Rossum though attributes the choice of the name Python to a popular comedy series Monty Python’s Flying Circus on BBC.

    Being the principal architect of Python, the developer community conferred upon him the title of Benevolent Dictator for Life (BDFL). However, in 2018, Rossum relinquished the title. Thereafter, the development and distribution of the reference implementation of Python is handled by a nonprofit organization Python Software Foundation.

  • Python Tutorial

    Python Tutorial

    Python is a widely used programming language that offers several unique features and advantages compared to languages like Java and C++. Our Python tutorial thoroughly explains Python basics and advanced concepts, starting with installation, conditional statements, loops, built-in data structures, Object-Oriented Programming, Generators, Exception Handling, Python RegEx, and many other concepts. This tutorial is designed for beginners and working professionals.

    In the late 1980s, Guido van Rossum dreamed of developing Python. The first version of Python 0.9.0 was released in 1991. Since its release, Python started gaining popularity. According to reports, Python is now the most popular programming language among developers because of its high demands in the tech realm.

    What is Python

    Python is a general-purpose, dynamically typed, high-level, compiled and interpreted, garbage-collected, and purely object-oriented programming language that supports procedural, object-oriented, and functional programming.

    Features of Python:

    • Easy to use and Read – Python’s syntax is clear and easy to read, making it an ideal language for both beginners and experienced programmers. This simplicity can lead to faster development and reduce the chances of errors.
    • Dynamically Typed – The data types of variables are determined during run-time. We do not need to specify the data type of a variable during writing codes.
    • High-level – High-level language means human readable code.
    • Compiled and Interpreted – Python code first gets compiled into bytecode, and then interpreted line by line. When we download the Python in our system form org we download the default implement of Python known as CPython. CPython is considered to be Complied and Interpreted both.
    • Garbage Collected – Memory allocation and de-allocation are automatically managed. Programmers do not specifically need to manage the memory.
    • Purely Object-Oriented – It refers to everything as an object, including numbers and strings.
    • Cross-platform Compatibility – Python can be easily installed on Windows, macOS, and various Linux distributions, allowing developers to create software that runs across different operating systems.
    • Rich Standard Library – Python comes with several standard libraries that provide ready-to-use modules and functions for various tasks, ranging from web development and data manipulation to machine learning and networking.
    • Open Source – Python is an open-source, cost-free programming language. It is utilized in several sectors and disciplines as a result.

    Python has many web-based assets, open-source projects, and a vibrant community. Learning the language, working together on projects, and contributing to the Python ecosystem are all made very easy for developers.

    Because of its straightforward language framework, Python is easier to understand and write code in. This makes it a fantastic programming language for novices. Additionally, it assists seasoned programmers in writing clear and error-free code.

    Python has many third-party libraries that can be used to make its functionality easier. These libraries cover many domains, for example, web development, scientific computing, data analysis, and more.

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    Java vs. Python

    Python is an excellent choice for rapid development and scripting tasks. Whereas Java emphasizes a strong type system and object-oriented programming.

    Here are some basic programs that illustrates key differences between them.

    Printing ‘Hello World’

    Python Code:

    print("Hello World!")

    Output:

    Hello, World!

    In Python, it is one line of code. It requires simple syntax to print ‘Hello World’

    Java Code:

    public class HelloWorld {  
    public static void main(String[] args) {  
        System.out.println("Hello, World!");  
    }  
}