Data Types In Python
Numbers : |
> Python supports three types of numbers: integers, floating-point numbers, and complex numbers.
> Integers are whole numbers without a decimal point, floating-point numbers have a decimal point,
and complex numbers have both real and imaginary components.
x = 5 # integer
y = 3.14 # floating-point number
z = 2 + 3j # complex number |
Lists In Python
Lists |
Lists are ordered sequences of values that can be of any data type.
They are mutable, which means that you can add, remove, or modify elements in a list.
fruits = ["apple", "banana", "cherry"]
print(fruits) # output: ["apple", "banana", "cherry"]
fruits.append("orange")
print(fruits) # output: ["apple", "banana", "cherry", "orange"]
fruits.remove("banana")
print(fruits) # output: ["apple", "cherry", "orange"] |
Booleans In Python
Booleans |
Boolean values represent either True or False.
They are used for logical operations and control flow statements, such as if-else statements and loops.
is_raining = True
is_sunny = False
print("Bring an umbrella")
else:
print("Enjoy the sunshine") |
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Strings in Python
Strings |
Strings are sequences of characters that are enclosed in single or double quotes.
They can be manipulated in various ways, such as concatenation, slicing, and formatting
message = "Hello, World!"
print(message) # output: Hello, World!
print(message[0]) # output: H
print(message[7:12]) # output: World
formatted_message = "My name is {} and I am {} years old".format("John", 25)
print(formatted_message) # output: My name is John and I am 25 years old |
Tuples In Python
Tuples |
Tuples are similar to lists in that they are ordered sequences of values,
but they are immutable, which means that you cannot modify them after they are created
coordinates = (10, 20)
print(coordinates) # output: (10, 20)
x, y = coordinates
print(x) # output: 10 |
Dictionaries in Python
Dictionaries |
Dictionaries are unordered collections of key-value pairs, where each key is unique.
They are commonly used for data modeling and organizing data.
person = {"name": "John", "age": 25, "address": "123 Main St"}
print(person) # output: {"name": "John", "age": 25, "address": "123 Main St"}
print(person["name"]) # output: John
person["phone"] = "555-1234"
print(person) # output: {"name": "John", "age": 25, "address": "123 Main St", "phone": "555-1234"} |
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