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About Lesson

Tuples are a fundamental data structure in Python that store ordered, immutable collections of items. Unlike lists, tuples cannot be modified after creation, making them ideal for storing constant data. In this comprehensive guide, we will delve into Python tuples, exploring their properties, common operations, and best practices for working with tuples in Python.

Understanding Python Tuples:

A Python tuple is an ordered collection of items enclosed in parentheses (()). Tuples can contain items of any data type, and a single tuple can even hold items of different data types.

Example in Python:
“`python
integer_tuple = (1, 2, 3, 4, 5)
string_tuple = (“apple”, “banana”, “cherry”)
mixed_tuple = (42, “hello”, 3.14, True)
“`

Tuple Indexing:

Tuples in Python are indexed, meaning each item in the tuple has a designated position or index, starting from 0. You can access individual items using their index with square brackets.

Example in Python:
“`python
fruits = (“apple”, “banana”, “cherry”)
first_fruit = fruits[0] # “apple”
“`

Tuple Slicing:

You can extract a subtuple from a tuple by specifying the start and end indices using the slice notation ([start:end]). The start index is inclusive, while the end index is exclusive.

Example in Python:
“`python
numbers = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
subtuple = numbers[1:4] # (1, 2, 3)
“`

Tuple Length:

To determine the length of a tuple, you can utilize the built-in len() function.

Example in Python:
“`python
animals = (“cat”, “dog”, “elephant”)
length = len(animals) # 3
“`

Tuple Concatenation:

You can concatenate two or more tuples using the + operator.

Example in Python:
“`python
tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6)

concatenated_tuple = tuple1 + tuple2 # (1, 2, 3, 4, 5, 6)
“`

Tuple Repetition:

To create a new tuple by repeating an existing tuple a specific number of times, you can use the * operator.

Example in Python:
“`python
repeated_tuple = (1, 2, 3) * 3 # (1, 2, 3, 1, 2, 3, 1, 2, 3)
“`

Tuple Membership:

You can check if an item is present in a tuple by using the in operator.

Example in Python:
“`python
fruits = (“apple”, “banana”, “cherry”)
is_present = “banana” in fruits # True
“`

Tuple Enumeration:

To iterate through a tuple along with the index of each item, you can use the built-in enumerate() function.

Example in Python:
“`python
fruits = (“apple”, “banana”, “cherry”)
for index, fruit in enumerate(fruits):
print(index, fruit)
“`

Tuple Packing and Unpacking:

Tuple packing involves creating a tuple by listing multiple items without parentheses.

Example in Python:
“`python
packed_tuple = 1, 2, 3 # (1, 2, 3)
“`

Tuple unpacking allows you to assign the elements of a tuple to multiple variables.

Example in Python:
“`python
numbers = (1, 2, 3)
a, b, c = numbers