Python Tutorials

Python - Basic Syntax and Execution of Python Scripts

Basic Syntax and Execution of Python Scripts

The Python syntax is a set of rules that defines how Python code or program will be written and interpreted by both runtime systems and human readers. It is designed for readability and ease of use, making it a popular choice among beginners and professionals alike.

Writing a Python Script:

When you want to create a Python script start by opening your IDE or text editor and making a file with a.py extension, which shows it's a Python script. To kick off easily you can begin with writing a Hello, World!" program;

print("Hello, World!")

Running the Script:

To execute your Python script, go to your command line move to the folder where your script is saved using the cd command, and enter python filename.py (remember to replace filename.py with your script name). The result of your script should be displayed in the command line.

The Basic Structure of Python Program

Comments:

Comments are used for the code explanation and are ignored by the Python interpreter. Python uses the # symbol for single-line comments and triple quotes (' ' ' or " " ") for multi-line comments.

# This is a single-line comment.
''' 
This is multi-line 
Comments 
'''

Indentation:

Indentation is crucial because Python does not use braces '{}' to mark blocks of code, so Python uses space or tabs as indentation to define the structure of the code blocks, such as loops, conditionals, and functions.

Unlike many other programming languages, Python uses indentation to determine the grouping of statements.

if True:
    print("This is indented")

Statements:

A Python statement is a logical line of code. That is used to act, like assigning a value to a variable. Statements can be assignments or expressions.

x = 5 # Assignment statement
print(x) # Expression statement

Variable and Data Types:

In Python, a variable is created at the moment we assign a value to them. Python supports various basic data types like Integer (int), Floating-Point number (float), String (str), and Boolean (bool).

age = 25 #integer 
name = "John" #string

Input and Output:

In Python, we have two functions, input and print. The input() function allows the program to take input from the user. The print() function is used to display output on the screen.

name = input("Enter your name: ")
print("Hello, " + name)

We have learned all the basic syntax of Python, including how to assign and declare variables, how indentation works, how to take input from the user, and how to print the output. Now it’s your time to practice more Python programs to better understand the syntax and logic.

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Python

Beginner 5 Hours

Basic Syntax and Execution of Python Scripts

The Python syntax is a set of rules that defines how Python code or program will be written and interpreted by both runtime systems and human readers. It is designed for readability and ease of use, making it a popular choice among beginners and professionals alike.

Writing a Python Script:

When you want to create a Python script start by opening your IDE or text editor and making a file with a.py extension, which shows it's a Python script. To kick off easily you can begin with writing a Hello, World!" program;

python
print("Hello, World!")

Running the Script:

To execute your Python script, go to your command line move to the folder where your script is saved using the cd command, and enter python filename.py (remember to replace filename.py with your script name). The result of your script should be displayed in the command line.

The Basic Structure of Python Program

Comments:

Comments are used for the code explanation and are ignored by the Python interpreter. Python uses the # symbol for single-line comments and triple quotes (' ' ' or " " ") for multi-line comments.

python
# This is a single-line comment.
''' 
This is multi-line 
Comments 
'''

Indentation:

Indentation is crucial because Python does not use braces '{}' to mark blocks of code, so Python uses space or tabs as indentation to define the structure of the code blocks, such as loops, conditionals, and functions.

Unlike many other programming languages, Python uses indentation to determine the grouping of statements.

python
if True:
    print("This is indented")

Statements:

A Python statement is a logical line of code. That is used to act, like assigning a value to a variable. Statements can be assignments or expressions.

python
x = 5 # Assignment statement
print(x) # Expression statement

Variable and Data Types:

In Python, a variable is created at the moment we assign a value to them. Python supports various basic data types like Integer (int), Floating-Point number (float), String (str), and Boolean (bool).

python
age = 25 #integer 
name = "John" #string

Input and Output:

In Python, we have two functions, input and print. The input() function allows the program to take input from the user. The print() function is used to display output on the screen.

python
name = input("Enter your name: ")
print("Hello, " + name)

We have learned all the basic syntax of Python, including how to assign and declare variables, how indentation works, how to take input from the user, and how to print the output. Now it’s your time to practice more Python programs to better understand the syntax and logic.

Related Tutorials

Frequently Asked Questions for Python

Python is commonly used for developing websites and software, task automation, data analysis, and data visualisation. Since it's relatively easy to learn, Python has been adopted by many non-programmers, such as accountants and scientists, for a variety of everyday tasks, like organising finances.


Python's syntax is a lot closer to English and so it is easier to read and write, making it the simplest type of code to learn how to write and develop with. The readability of C++ code is weak in comparison and it is known as being a language that is a lot harder to get to grips with.

Learning Curve: Python is generally considered easier to learn for beginners due to its simplicity, while Java is more complex but provides a deeper understanding of how programming works. Performance: Java has a higher performance than Python due to its static typing and optimization by the Java Virtual Machine (JVM).

Python can be considered beginner-friendly, as it is a programming language that prioritizes readability, making it easier to understand and use. Its syntax has similarities with the English language, making it easy for novice programmers to leap into the world of development.

To start coding in Python, you need to install Python and set up your development environment. You can download Python from the official website, use Anaconda Python, or start with DataLab to get started with Python in your browser.

Learning Curve: Python is generally considered easier to learn for beginners due to its simplicity, while Java is more complex but provides a deeper understanding of how programming works.

Python alone isn't going to get you a job unless you are extremely good at it. Not that you shouldn't learn it: it's a great skill to have since python can pretty much do anything and coding it is fast and easy. It's also a great first programming language according to lots of programmers.

The point is that Java is more complicated to learn than Python. It doesn't matter the order. You will have to do some things in Java that you don't in Python. The general programming skills you learn from using either language will transfer to another.


Read on for tips on how to maximize your learning. In general, it takes around two to six months to learn the fundamentals of Python. But you can learn enough to write your first short program in a matter of minutes. Developing mastery of Python's vast array of libraries can take months or years.


6 Top Tips for Learning Python

  • Choose Your Focus. Python is a versatile language with a wide range of applications, from web development and data analysis to machine learning and artificial intelligence.
  • Practice regularly.
  • Work on real projects.
  • Join a community.
  • Don't rush.
  • Keep iterating.

The following is a step-by-step guide for beginners interested in learning Python using Windows.

  • Set up your development environment.
  • Install Python.
  • Install Visual Studio Code.
  • Install Git (optional)
  • Hello World tutorial for some Python basics.
  • Hello World tutorial for using Python with VS Code.

Best YouTube Channels to Learn Python

  • Corey Schafer.
  • sentdex.
  • Real Python.
  • Clever Programmer.
  • CS Dojo (YK)
  • Programming with Mosh.
  • Tech With Tim.
  • Traversy Media.

Python can be written on any computer or device that has a Python interpreter installed, including desktop computers, servers, tablets, and even smartphones. However, a laptop or desktop computer is often the most convenient and efficient option for coding due to its larger screen, keyboard, and mouse.

Write your first Python programStart by writing a simple Python program, such as a classic "Hello, World!" script. This process will help you understand the syntax and structure of Python code.

  • Google's Python Class.
  • Microsoft's Introduction to Python Course.
  • Introduction to Python Programming by Udemy.
  • Learn Python - Full Course for Beginners by freeCodeCamp.
  • Learn Python 3 From Scratch by Educative.
  • Python for Everybody by Coursera.
  • Learn Python 2 by Codecademy.

  • Understand why you're learning Python. Firstly, it's important to figure out your motivations for wanting to learn Python.
  • Get started with the Python basics.
  • Master intermediate Python concepts.
  • Learn by doing.
  • Build a portfolio of projects.
  • Keep challenging yourself.

Top 5 Python Certifications - Best of 2024
  • PCEP (Certified Entry-level Python Programmer)
  • PCAP (Certified Associate in Python Programmer)
  • PCPP1 & PCPP2 (Certified Professional in Python Programming 1 & 2)
  • Certified Expert in Python Programming (CEPP)
  • Introduction to Programming Using Python by Microsoft.

The average salary for Python Developer is ₹5,55,000 per year in the India. The average additional cash compensation for a Python Developer is within a range from ₹3,000 - ₹1,20,000.

The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python website, https://www.python.org/, and may be freely distributed.

If you're looking for a lucrative and in-demand career path, you can't go wrong with Python. As one of the fastest-growing programming languages in the world, Python is an essential tool for businesses of all sizes and industries. Python is one of the most popular programming languages in the world today.

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