Python Basics: Programming Your First Script

Welcome to our Python Basics tutorial! In this tutorial, we'll cover the fundamental Python concepts and syntax to program your first script.

This Python tutorial assumes that you have a basic understanding of programming concepts, if you're new to programming, consider exploring our programming-basics tutorial, before proceeding to this Python tutorial

Introduction to Python

Python is a high-level, easy-to-learn language, it is one of the most popular programming languages in the world,its used extensively in fields like, machine learning,AI,web development,data science etc

python has a ton of built in modules and libraries,which makes it easier to code.

let's see how to code in python!

Printing Output

Use the print() function to output text to the screen.

The print() function takes one or more arguments and displays them on the screen.

You can use the print() function to output strings, numbers, or any other data type.

For example, you can use the print() function to print a simple message, like "Hello, World!"

Variables and Data Types

Variables are entities whose value can be changed throughout the program execution,we store different values to variables,to avoid repetitive code writing,variables forms the basics of every programming languages

Use the assignment operator (=) to declare variables and assign data types.


x = 5
y = "Hello, World!"

Conditional Statements

Use if and else statements to make decisions in your code.


if x > 5:
print("x is greater than 5")
else:
print("x is less than or equal to 5")

the syntax for if-else,is


  if <condition>: 

     <statement> 

  else: 

     <statement>

first,the condition in if is checked,if its true then the statements defined in if is executed,if it becomes false,the statements in the else,is executed.

Functions

functions allows,us to store a piece of code,which runs when it is called,it is a very useful feature in python,it allows you to avoid repeating a code,instead,you just write a single function,and use it as many time as you wish!

Use functions to reuse code and perform tasks.


def greet(name):
print(f"Hello, {name}!")
greet("John Doe")

Loops

consider a scenario where you had to write first 1000 numbers in python,what would you do?,you would probably write print function for each number,but this would require a lot of time,and also it would increase the execution time

but don't we have loops in python,which allows us to run a specific code for a specified number of times!

Use for loops to iterate over sequences.


for i in range(5):
print(i)

Conclusion and Next Steps

Congratulations! You've learned the basic Python concepts and syntax. Practice building your own scripts using this tutorial as a reference. In the next tutorial, we'll explore Python lists and dictionaries.

Frequently Asked Questions

What is Python?: Python is a high-level, easy-to-learn programming language.
What is a variable in Python?: A variable is a container that holds a value.
How do I declare a function in Python?: Use the def keyword to declare a function.
What is a loop in Python?: A loop is used to iterate over sequences.
What is the difference between print() and return in Python?: print() outputs text to the screen, while return exits a function and returns a value.