Python Day-9 Mathematical Operations & Dictionaries in Python - Explained with Examples

📌 In this video, we’ll explore:
1️⃣ Basic and advanced mathematical operations in Python.
2️⃣ A deep dive into Python dictionaries, their structure, and how to use them.
3️⃣ Hands-on examples for better understanding.
📗 Topics Covered:
✅ Addition, subtraction, multiplication, and division in Python.
✅ Modulus, exponentiation, and floor division.
✅ How to create, update, and access dictionaries.
✅ Practical examples of using dictionaries in Python programs.
🚀 By the end of this video, you’ll be able to:
Perform complex calculations using Python.
Work confidently with Python dictionaries.
🔗 Don't forget to like 👍, share 🔄, and subscribe 🔔 for more Python tutorials!
Examples of Mathematical Operations
Basic Arithmetic:
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Addition, Subtraction, Multiplication, Division
a = 10
b = 5
print("Addition:", a + b)
print("Subtraction:", a - b)
print("Multiplication:", a * b)
print("Division:", a / b)
Modulus and Floor Division:
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Modulus and Floor Division
x = 15
y = 4
print("Modulus:", x % y) # Remainder of division
print("Floor Division:", x // y) # Rounds down to nearest integer
Exponentiation:
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Exponentiation
base = 2
power = 3
print("Exponentiation:", base ** power)
Using Math Library:
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import math
Square root and rounding
num = 16
print("Square Root:", math.sqrt(num))
print("Rounded Value:", round(4.567, 2))
Combining Operations:
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Combination of operations
result = (10 + 2) * 3 / 2 - 4
print("Combined Result:", result)
Examples of Dictionaries
Creating a Dictionary:
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Define a dictionary
person = {"name": "Alice", "age": 25, "city": "New York"}
print(person)
Accessing Values:
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Access values by key
print("Name:", person["name"])
print("Age:", person["age"])
Updating and Adding Elements:
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Update existing key and add new key
person["age"] = 26
person["profession"] = "Engineer"
print(person)
Removing Elements:
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Remove an element using pop
person.pop("city")
print(person)
Iterating Through a Dictionary:
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Loop through keys and values
for key, value in person.items():
print(key, ":", value)

[@MarkEdwards-p3i]

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