Python Programming Basic

 

📘 Python Basics Documentation

This document explains how to set up a Python file and covers some of the foundational concepts such as data types, printing values, comments, escape sequences, and variables.

🗂️ Creating a Python File

To start coding in Python, you need to create a `.py` file. Here’s how to do it:

1. Create a folder (example: `pythonclass`) to store your Python projects.

2. Inside that folder, right-click and choose:
   New → Python File
   Name your file (e.g., `first_script.py`).

🔢 Python Data Types

Python supports various data types. Below are some of the basic ones:

1. Integer

Whole numbers without a decimal point.

print(10)

2. Floating Point / Decimal

Numbers with decimal points.

print(10.5)

3. String

A sequence of characters. Strings can be enclosed in either single (`'`) or double (`"`) quotes.

print("Topu")
print('Topu')

💬 Comments in Python

Comments are notes in your code that Python ignores during execution. They help others (and you) understand the code.

1. Single-line comment

Use the `#` symbol:

# This is my biodata

2. Multi-line comment

Use triple single quotes (`'''`) or triple double quotes (`"""`) to write multi-line comments:

'''
This
Is
A
Multiple line
Comment
'''

🔁 Escape Sequences (Backslash Characters)

Escape sequences allow you to include special characters in strings.

Examples:

print("Topu \n 0162933443")      # \n adds a new line

print("Topu \t 0162933443")      # \t adds a tab space

print("\"Sabbir Chowdhury\"")     # \" lets you use double quotes inside a string

print('\'Sabbir Topu\'')          # \' lets you use single quotes inside a string

Common Escape Sequences:

Escape Code	Meaning
\n	New Line
\t	Tab Space
\"	Double Quote
\'	Single Quote

 

 

🧠 Variables

Variables are used to store data that you can use later in your program.

name = "Topu"
age = 25
print(name)
print(age)

This document provides the essential building blocks to begin your Python journey. Practice each example to become comfortable with the syntax and concepts.