Important Python Fundamentals For Beginners

Education

Python is gaining popularity day by day due to its wide applications and simplicity. Most people dream of a high-paying job that is possible by learning python programming language as it offers various high-profile jobs.

Do you also want to learn this simple and high demanding language?

If yes, you are at the right place in this article; we will explore some Python fundamentals. Before starting your journey of learning Python, you should know about the basics of Python that we will cover in this article and can get easily python programming homework help.

So let’s start the discussion with the definition of Python and other important aspects of Python.

What is Python?

Python is a general-purpose, high-level scripting language. Guido Van Rossum developed it in 1991, and now it is used for various purposes such as web development, game development, scientific computing, etc.

Python is a simple and straightforward language, and novices can learn it with ease. The syntax of Python is short and simple so that learners can write a program without any difficulty.

Reasons to learn Python

There are various reasons to learn Python. Some of them are-

  • It is free and open-source
  • Easy to Learn
  • It is portable
  • The syntax is easy and readable code
  • Wide applications
  • Codes are short as a comparison to other languages
  • High in popularity
  • It is extensible and embedded
  • Dynamically typed

Python Fundamentals

If you want to learn Python, you need to strengthen your basics so that you can learn it without any hitch. Let’s discuss Python fundamentals that will enable you to understand Python easily.

Statements

There are two types of statements in Python: Expression Statements, Assignment Statements.

These are the logical instructions that an interpreter reads and execute and can be single or multiple.

In Python, expression statements are used for the arithmetic operations such as addition, subtraction, multiplication, division, etc. On the other hand, assignment statements are used when assigning, changing, and creating values.

Indentation

Indentation plays an important role, and we use it to mark a group of codes. According to PEP8 Python Enhancement Proposal or Python style guidelines, the indent size should be four.

Comments

Comments are one of the major Python fundamentals. These Comments are the tagged lines that are used to enhance the readability of codes.

There are two types of comments.

Single Line Comment: We can comment in a single line with the help of # simbol.

Multiline Comment: We can comment in multiple lines by using “…… “.

Variables

We store different values in variables, and we can change the memory address. It occupies the space in memory when we store the values in variables. You can use a number, letter, and underscore character as a variable. Such as n=1, x=2.

When we can not change the variable, it is known as constant. The values of the constants remain the same over time. Such as Pi= 3.14, cos90=0.

Tokens

There are 4 types of tokens and are known as the smallest unit of the program.

Reserved Words or Keywords: These are the special and fixed words that refer to a specific meaning in Python. As Python is case-sensitive, we can use keywords in place of variables.

Identifiers: Identifiers are user-defined to express functions, modules, variables, classes, and other entities.

Some rules are there that we need to follow before defining identifiers.

To define the identifiers, we can use series of letters either in lowercase or uppercase. Moreover, we can use digit numbers from 0 to 1.

You are not recommended to use digit numbers in the beginning of the identifier’s name.

If you want to express an identifier, don’t use reserved words.

According to the PEP8 guidelines, the name of the identifier should be within 79 characters.

Literals- In Python 5 types of literals are used to represent data in variables or constant.

String Literals-Sequence of characters single, double, and triple quotes for a string.

Numeric Literals- Integers, complex, float

Boolean Literals- True, false

Collection Literals- List, tuple, Dic, and set

Special Literals- None(Field is not created)

Operators

Operators are the symbols that are used to perform different operations for operands or values. There are 7 types of operators used in Python.

Arithmetic Operators- Arithmetic operators are used for the different operations such a addition(+), Subtraction(-), Division(/), multiplication(*), modulus(**).

Relational Operators: These are comparison operators used to compare values. It returns the value in boolean expressions such as true and false.

Assignment Operators- Here, we use different symbols for different operations such as For assignment(=), Add then assign(+=), Subtract then assign(-=), Multiply then assign(*=) etc.

Logical Operators-  These are and(Logical AND), or(Logical OR), not(Logical NOT) operators.

Membership Operators- We use (In, for true, not in for false)

Bitwise Operators-The symbols are as follows- Binary AND(&), Binary OR(!), Binay XOR(^) etc.

Identity Operators- In identity operators, “is” shows true when both operands are the same; otherwise, false, and “Is not” shows true when the identity of both operands is not equal.

Conclusion I hope now you are clear about the Python fundamentals, what are they, and why we need to know them. Python fundamentals are the basic building blocks of Python programming. If a person wants to learn Python efficiently, he or she needs to sharpen their skills regarding programming. In this article we have discusses all the major basic building blocks of Python with the help of which a beginner or a learner can learn this valuable language.