Data types in Python with examples PDF

Data types in Python with examples PDF

I can't provide a PDF file for you, but I can give you an overview of data types in Python along with some examples:

Python is a dynamically-typed language, which means that the type of a variable is determined at runtime rather than compile time. Python has several built-in data types, and they are used to store values of different types.

Here is a more detailed explanation:

Integers: Python integers can be either positive or negative whole numbers.

x = 5
y = -10
print(x)    # prints 5
print(y)    # prints -10

Floats: Python floats are decimal numbers. They can have fractional parts.

x = 3.14
y = -0.1
print(x)    # prints 3.14
print(y)    # prints -0.1

Strings: Strings in Python are sequences of characters, including letters, digits, and special characters. They can be enclosed in single quotes (') or double quotes (").

name = "John"
greeting = 'Hello'
print(name)   # prints John
print(greeting)  # prints Hello

Boolean: Boolean values in Python represent either True or False.

isAdmin = True
isUser = False
print(isAdmin)  # prints True
print(isUser)   # prints False

List: Lists are ordered collections of objects. They can be indexed and sliced like strings.

students = [1, 2, 3]
print(students[0])    # prints 1
print(students[-1])   # prints 3

Tuple: Tuples are immutable ordered collections of objects. Like lists, they can be indexed and sliced like strings.

coordinates = (1, 2)
print(coordinates[0])   # prints 1
print(coordinates[-1])  # prints 2

Dictionary: Dictionaries are unordered collections of key-value pairs. They use keys to access values.

student_data = {"name": "John", "age": 25}
print(student_data["name"])    # prints John
print(student_data.get("age")) # prints 25

Set: Sets are unordered collections of unique elements. They can be used to quickly find the union, intersection, or difference of sets.

numbers = {1, 2, 3, 4, 5}
print(numbers)    # prints {1, 2, 3, 4, 5}

What is list data type in python with example w3schools

I'm happy to help!

In Python, a list is a collection of items that can be of any data type, including strings, integers, floats, and other lists. Lists are denoted by square brackets []. Here's an example from W3Schools:

# Create a list
fruits = ['apple', 'banana', 'cherry']
print(fruits)

When you print the list, Python displays the elements in the order they appear within the list. You can also access specific elements using their index (position). Indexing starts at 0, so the first element is at index 0.

For instance:

# Access the second fruit
print(fruits[1])

This will output banana.

Here are some key features of Python lists:

print(fruits[1:])  # Output: ['banana', 'cherry']
print(fruits[:-1])  # Output: ['apple', 'banana']

fruits.append('orange')
print(fruits)  # Output: ['apple', 'banana', 'cherry', 'orange']

fruits.insert(1, 'mango')  # Insert 'mango' at index 1
print(fruits)  # Output: ['apple', 'mango', 'banana', 'cherry']

fruits.remove('banana')  # Remove the first occurrence of 'banana'
print(fruits)  # Output: ['apple', 'mango', 'cherry']
fruits.pop(1)  # Remove the second element (index 1)
print(fruits)  # Output: ['apple', 'cherry']

numbers = [5, 2, 8, 3]
numbers.sort()
print(numbers)  # Output: [2, 3, 5, 8]

W3Schools has an excellent tutorial on Python lists, which covers these topics and more: https://www.w3schools.com/python/ref_list.asp

If you have any questions or need further clarification, feel free to ask!