Welcome to this blog, where we will Learn to code Python from scratch. This blog will contain tutorials in the form of lessons, notes, and videos.
Learn to Code Python – Part 1 – Basics
📘 Section 1: What is Python and Programming?
💡 Programming
Programming means giving step-by-step instructions to a computer to perform a task — like telling a robot what to do.
💡 Python
Python is a simple and powerful programming language used in web development, data science, automation, and more.
⚙️ Section 2: Setting Up Python
✅ Step 1: Install Python
You need Python installed to write and run your code. Download it from python.org.
✅ Step 2: Install VS Code
VS Code is a code editor where you write Python scripts. It makes coding easier with suggestions, error checks, and a terminal.
🧠 Section 3: Python Basics
📌 Data Types
Python has different types of data, just like real life:
| Type | Example | Python Name |
|---|---|---|
| Text | "hello" | str |
| Number | 24 | int |
| Decimal | 59.7 | float |
| True/False | True or False | bool |
📌 Variables
Variables are containers to store data.
name = "Kunal"
age = 24
is_married = False
Think of a cup holding water – the cup is the variable, and the water is the data.
🧪 Section 4: Type, Input, and Conversion
📌 type() Function
This shows what type of data a variable has.
print(type(name)) # str
print(type(age)) # int
📌 Getting User Input
We can ask users questions and store their answers.
name = input("What is your name? ")
🔁 Section 5: Data Conversion and F-Strings
📌 Type Conversion
Sometimes we need to change data from one type to another.
age = int(input("Enter your age: "))
📌 f-Strings
This is a cool way to write dynamic messages:
name = "Kunal"
age = 24
print(f"My name is {name} and I am {age} years old.")
🧮 Section 6: Lists and Operators
📌 Operators in Python
Operators are used to perform calculations:
| Symbol | Meaning | Example |
|---|---|---|
+ | Addition | 2 + 3 = 5 |
- | Subtraction | 5 - 2 = 3 |
* | Multiplication | 3 * 2 = 6 |
/ | Division | 6 / 3 = 2.0 |
// | Floor Division | 7 // 2 = 3 |
% | Modulus | 7 % 2 = 1 |
📌 Lists
A list is a collection that can store multiple values:
fruits = ["apple", "banana", "mango"]
print(fruits[0]) # apple
Lists can even store different data types.
🧠 Recap of What You’ve Learned in Part 1:
- What programming is and why Python is a great choice
- How to install Python and VS Code
- Variables and Data Types
- Checking data types using
type() - Taking user input
- Converting data types
- Using f-strings for clean output
- Working with lists and operators
Learn to Code Python – Part 2 – Operators
Welcome back, future Python masters! 👋 In Part 1 of our Python journey, we learned the basics — variables, data types, user input, and printing values. Now, it’s time to unlock the real power of Python by mastering operators.
In this post, we’ll break down operators step-by-step with simple examples, real-life analogies, and mini challenges to help you understand and apply them confidently.
🧠 What Are Operators?
Operators are symbols used to perform operations on values and variables.
Think of them like calculator buttons — they help you do math, compare values, and more.
🧮 Lesson 1: Arithmetic Operators
Operators Covered: +, -, *, /
These are basic math operations used in almost every program.
x = 20
y = 4
print(x + y) # 24
print(x - y) # 16
print(x * y) # 80
print(x / y) # 5.0
📌 Output:
24
16
80
5.0
🔢 Lesson 2: Floor Division and Modulus
Operators Covered: //, %
//→ Returns only the whole number part (floor division)%→ Gives the remainder after division (modulus)
print(7 // 2) # 3
print(7 % 2) # 1
📌 Output:
3
1
🧃 Example: Sharing 7 chocolates with 2 friends — each gets 3, and 1 is left.
⚡ Lesson 3: Power Operator
Operator Covered: **
Used for exponentiation — multiplying a number by itself multiple times.
print(2 ** 3) # 8 (2×2×2)
print(5 ** 2) # 25 (5×5)
📌 Output:
8
25
🎯 Try It: Calculate the cube of a number using **.
🤝 Lesson 4: Comparison Operators
Operators: ==, !=, >, <, >=, <=
These return True or False when comparing values.
a = 10
b = 20
print(a == b) # False
print(a < b) # True
📌 Output:
False
True
Use them in conditions — like checking age for voting eligibility.
📦 Lesson 5: Assignment Operators
Operators: =, +=, -=, *=, /=
These update variable values in short form.
x = 10
x += 5
print(x) # 15
x *= 2
print(x) # 20
📌 Output:
15
20🍜 Analogy: Like adding more food to your plate without changing plates.
🔐 Lesson 6: Logical Operators
Operators: and, or, not
Used for combining conditions in if statements or filters.
a = True
b = False
print(a and b) # False
print(a or b) # True
print(not a) # False
📌 Output:
False
True
False
Logical AND (and)
| condition_1 | condition_2 | condition_1 and condition_2 |
|---|---|---|
| True | True | True |
| True | False | False |
| False | True | False |
| False | False | False |
Logical OR (or)
| condition_1 | condition_2 | condition_1 or condition_2 |
|---|---|---|
| True | True | True |
| True | False | True |
| False | True | True |
| False | False | False |
Logical NOT (not condition_1)
| condition_1 | not condition_1 |
|---|---|
| True | False |
| False | True |
Try this:
age = 18
is_student = True
print(age > 17 and is_student) # True
🧬 Lesson 7: Identity & Membership Operators
Operators: is, is not, in, not in
is: Checks if two variables point to the same object in memory.in: Checks if a value exists in a list, string, etc.
a = [1, 2, 3]
b = a
print(a is b) # True
print(2 in a) # True
📌 Output:
True
True
🧮 Lesson 8: Operator Precedence
Like BODMAS in math, Python follows an order of operations.
print(2 + 3 * 4) # 14
print((2 + 3) * 4) # 20
📌 Output:
14
20
🎯 Always use parentheses () to control execution order clearly.
✅ Python Equivalent of PEMDAS
Python uses the same basic math precedence rules:
| PEMDAS | Python Equivalent | Example |
|---|---|---|
| P | () Parentheses | (2 + 3) * 4 → 20 |
| E | ** Exponentiation | 2 ** 3 → 8 |
| MD | *, /, //, % | 10 / 2 * 3 → 15.0 |
| AS | +, - | 10 - 2 + 1 → 9 |
📌 Note: Multiplication/Division and Addition/Subtraction are evaluated left to right, depending on which comes first.
🧪 Lesson 9: Mini Python Calculator (Project)
Let’s combine all your knowledge and build a simple calculator.
a = 10
b = 5
op = '*'
if op == '+':
print(a + b)
elif op == '-':
print(a - b)
elif op == '*':
print(a * b)
elif op == '/':
print(a / b)
📌 Output:
50
🎯 Try replacing op = '*' with other operators and see the results.
