Python me Variables kya hote hain?

Sabse pehle aap log ye image dekho :-

Simple shabdon me: 👉 Variable ek container ki tarah hota hai jo data ko store karta hai.

Is image me variable ko ek jar (container) ke example se samjhaya gaya hai. Jaise har jar ke andar koi cheez hoti hai jaise sugar, chilli ya oil, waise hi programming me variable ek container hota hai jisme data store hota hai. Jar ka naam variable name hota hai aur jar ke andar ki cheez data ya value ko represent karti hai.

Ab seekho variable kaise banaya jaata hai.

Python me variable banana bahut aasaan hai — bas naam likhho, = lagao, aur value do. Bas itna hi! 😊

Python

In [1]:

name   = "Rahul"      # String variable
age    = 21            # Integer variable
height = 5.9           # Float variable
is_student = True      # Boolean variable

print("Name   :", name)
print("Age    :", age)
print("Height :", height)
print("Student:", is_student)
print("Type of name:", type(name))

Output

Iss code me name = "Rahul", age = 21 aisa kuch likha hai. Iska bada simple matlab hai ki memory me alag alag jagahein banti hain jisme "Rahul", 21, 5.9 stored hain — aur un jagahon ka naam name, age, height hai.

Note : Python me yaad rakhna — '=' ke left side jo likha hai usme '=' ke right side wali cheez store hoti hai.

( a = 10 ka matlab hai 'a' me '10' rakha hai )

Multiple Variables ek saath banana

Python me ek hi line me multiple variables bana sakte hain — yeh bahut convenient hota hai!

Python

In [1]:

# Ek hi line me multiple variables
a, b, c = 10, 20, 30
print(a, b, c)

# Sab ko same value dena
x = y = z = 0
print(x, y, z)

# Variable ki value update karna
score = 50
print("Pehle:", score)
score = score + 10    # 10 aur jodo
print("Baad me:", score)

Output

Variable banane ke kuch rules :

Variable ka naam letter (a–z, A–Z) ya underscore (_) se start hona chahiye.
Variable ka naam number se start nahi ho sakta.
Variable name me sirf letters, numbers aur underscore (_) use ho sakte hain.
Koi special character jaise '$@#' use nahi karna.
Variable name me space allowed nahi hota.
Variable ka naam Python keywords (jaise if, for, while) nahi ho sakta.
Python case-sensitive hai, isliye name aur Name alag variables hote hain.

Python

In [1]:

# Valid variable names ✅
name     = "Harsh"
_age     = 21
my_score = 95
name2    = "Priya"

print(name, _age, my_score, name2)

# Case-sensitive — naam aur Naam alag hain
naam = "Arjun"
Naam = "Rohit"
print("naam:", naam)
print("Naam:", Naam)

# Niche wali lines uncomment karoge to error aayega ❌
# 2name = "Rahul"    # number se shuru — invalid
# my name = "Aman"  # space hai — invalid

Output

Python me rozz aap khoop variables banaoge to chill rehena — banate banate sab seekh hi jaaoge. 😁😁😁😁😁😁

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