Retrieving column by column

Lesson Details:

I: Introduction

In this article, I will outline the basics of Python. Python is a high-level programming language that is used in many areas of computer science. It was created by Guido van Rossum in 1989 and it has been growing very popular since its release. In 2015, Python was ranked at number 7 on the TIOBE Index[1] of programming languages, behind C, C++, Java, JavaScript, C#, and PHP. Currently it is being used in a wide variety of fields including web development, education, information security, and bioinformatics. Python has a very easy learning curve and can be used to complete a wide variety of tasks.

II: Body

Python is a high-level programming language that can be used to write powerful applications. Python is relatively fast compared to other programming languages such as C and C++ because it has a dynamic type system. Python does not require you to define variables before you use them[2]. It also uses indentation to define code blocks instead of using parentheses or curly brackets[3]. While many people think that using indentation takes up space in an application, this is not true because Python does not require you to use curly brackets or parentheses for its code blocks.

Below is an example of how the above code block would look with curly brackets and parentheses.

if (x < y) {

x = 1;

} else {

y = 2;

}

Because Python does not require you to use curly brackets or parentheses, there are fewer lines of code than an application written in C or C++. This helps when writing large applications because there are fewer lines of code to read, which helps make the code more readable. It has several built-in functions that make programming much easier, such as lists and dictionaries. Lists in Python are similar to arrays in C and C++. Lists hold several values in order in memory while arrays only hold one value in order in memory. Dictionaries in Python are similar to hash tables in C and C++. They contain multiple values that can be accessed by their keys. Dictionaries are less efficient than lists when storing values in order like lists are but they are more efficient when searching for values like hash tables are.

III: Conclusion

Python is a flexible programming language that is useful for many different types of applications. It has several built-in functions that make life easier for programmers who are working on large apps. Using Python to build software applications makes developing an app much faster than using other programming languages because Python does not require curly brackets or parentheses. The syntax of Python uses indentation instead of curly brackets or parentheses to define code blocks which saves space when writing large applications. Overall Python is a great programming language for beginners who are just starting out with their coding journey.