DAY-2 OF LEARNING PYTHON

 Heyy! Day 2 let’s gooo!

So yesterday you nailed the setup — Python installed, VS Code ready, "Hello World" running like a champ. Now? Time to actually store stuff — like your name, age, marks, whatever. That’s where variables come in. Think of them as little sticky notes with data on them.

🐍

Let me show you real quick:

python

name = "middle class boy"
age = 25
height = 5.9

Boom. That’s it. No drama. No int age = 25; like in C. Python just knows.

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Okay, but what can we store?

4 main types for now:

Type	Example	What it is
int	10, -5	Whole numbers
float	3.14, 99.99	Decimal numbers
str	"hello", 'Python'	Text (use quotes!)
bool	True, False	Yes/No logic

Wanna check? Use type():

python

print(type(age))     # → <class 'int'>
print(type(height))  # → <class 'float'>

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Let’s code! Open day2.py

Type this in:

python

name = "Priya"
age = 22
score = 95.5
is_cool = True

print(f"Hey {name}, you're {age} and scored {score}!")
print("Are you cool?", is_cool)

Run it →

text

Hey Priya, you're 22 and scored 95.5!
Are you cool? True

f-strings are LIFE. Just put {variable} inside f"..." and it prints clean. No more "Hello " + name + "!" mess.

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Input from user? Easy.

python

user = input("What's your name? ")
print(f"Nice to meet you, {user}!")

Warning: input() always gives a string. Even if user types 25, it’s "25".

So if you wanna do math:

python

age = input("Your age? ")
age = int(age)  # ← convert!
print("Next year:", age + 1)

Try typing 20 → Output: Next year: 21

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Mini Project Time! (Your Exercise)

Make a salary printer:

1. Ask name
2. Ask salary (float)
3. Print: Hey middle class boy, your salary is $55000.75
4. Then: As whole number: $55000

Here’s the code (type it yourself!):

python

name = input("Enter name: ")
salary = float(input("Enter salary: "))

print(f"Hey {name}, your salary is ${salary}")
print(f"As integer: ${int(salary)}")

Test it:

text

Enter name: Middle class boy
Enter salary: 55000.75
→ Hey Middle class boy, your salary is $55000.75
→ As integer: $55000

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Common Oops Moments

Mistake	What happens	Fix
int("hello")	ValueError	Only convert numbers!
age = 25 print(age)	SyntaxError	Need comma or new line
Forgetting quotes	NameError	"hello" not hello

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Your Day 2 Checklist

• Created variables
• Used int, float, str, bool
• Tried input() + int()
• Used f-strings
• Ran the salary program

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Tomorrow? → Day 3: Operators

We’re building a mini calculator! You’ll use:

• + - * / // %
• == != > <
• and or not

Sneak peek:

python

a = 10
b = 3
print(a // b)  # → 3 (floor division!)