Tuples in Python

✅ What is a Tuple?

A tuple is a collection in Python that lets you store multiple items in a single variable.

It is:

• Ordered – items stay in the same order
• Immutable – you cannot change the items once added
• Allows duplicates – repeated values are okay

🟨 How to Create a Tuple

Use round brackets () to create a tuple.

my_tuple = ("apple", "banana", "cherry")
print(my_tuple)

📌 You can also create a tuple without parentheses (Python understands it):

my_tuple = "apple", "banana", "cherry"

🧪 Tuple Examples

fruits = ("apple", "banana", "cherry")
numbers = (1, 2, 3, 4)
mixed = (1, "hello", 3.5)

✅ Tuples can contain:

• Strings
• Integers
• Floats
• Booleans
• Other tuples!

🔢 Accessing Tuple Items

Use index numbers to access values (starting from 0):

colors = ("red", "blue", "green")
print(colors[0])  # red
print(colors[1])  # blue

You can also use negative indexing:

print(colors[-1])  # green (last item)

🚫 Tuples are Immutable

Once a tuple is created, you can't change, add, or remove items:

numbers = (1, 2, 3)
# numbers[0] = 10  ❌ This will give an error

📏 Tuple Length

Use the len() function:

my_tuple = ("a", "b", "c")
print(len(my_tuple))  # 3

🔁 Looping Through a Tuple

Use a for loop to go through items:

colors = ("red", "blue", "green")
for color in colors:
    print(color)

🔄 Tuple Operations

✅ Concatenation:

t1 = (1, 2)
t2 = (3, 4)
result = t1 + t2  # (1, 2, 3, 4)

✅ Repetition:

t = ("hi",)
print(t * 3)  # ('hi', 'hi', 'hi')

🔍 Checking for an Item

fruits = ("apple", "banana", "cherry")
if "apple" in fruits:
    print("Yes, apple is there!")

🧩 Tuple with One Item?

You must add a comma if the tuple has only one item:

t = ("hello",)  # This is a tuple
x = ("hello")   # This is just a string

🧱 Nesting Tuples

Tuples can contain other tuples:

nested = (1, 2, (3, 4))

📦 Tuple Packing and Unpacking

Packing:

info = ("Ansh", 7, "India")

Unpacking:

name, age, country = info
print(name)     # Ansh
print(age)      # 7
print(country)  # India

🔄 Converting Lists to Tuples

Use the tuple() function:

my_list = [1, 2, 3]
my_tuple = tuple(my_list)
print(my_tuple)  # (1, 2, 3)

📌 Tuple Methods

Method	Description
count()	Counts how many times an item appears
index()	Returns the index of the first occurrence of an item

Example:

t = (1, 2, 3, 2, 4)
print(t.count(2))   # 2
print(t.index(3))   # 2

✅ When to Use Tuples?

Use tuples when:

• You want data to be unchanged (read-only)
• You are storing a fixed set of items
• You want faster access than a list

🎓 Summary

• Tuples use () to store multiple items
• They are ordered and immutable
• You can access items with indexing
• Tuples are faster and safer than lists for fixed data
• You can loop, count, and unpack tuples