Python Course 🐍

# Example of a simple Python script demonstrating core concepts
def main():
    # Basic print statement
    print("Welcome to Python Programming!")
    
    # Variable declaration and input
    name = input("Enter your name: ")
    print(f"Hello, {name}!")

if __name__ == "__main__":
    main()

print("Hello World")  # String literal
print(10)             # Integer
x = "OpenAI"
print(x, "GPT-4")     # Output: OpenAI GPT-4

num_str = "123"
num_int = int(num_str)  # Convert to integer
print(num_int * 2)      # 246

age = 20
if age >= 18:
    print("Adult")
elif 13 <= age < 18:
    print("Teen")
else:
    print("Child")

# For loop with range
for i in range(3):
    print(f"Count: {i}")

# While loop with break
counter = 5
while counter > 0:
    print(counter)
    counter -= 1
    if counter == 2:
        break

fruits = ["apple", "banana"]
fruits.append("cherry")
print(fruits[1:3])  # ['banana', 'cherry']

student = {
    "name": "Alice",
    "age": 22,
    "courses": ["Math", "CS"]
}
print(student.get("email", "N/A"))  # Graceful missing key handling

def calculate_area(radius):
    """Calculate circle area"""
    PI = 3.14159
    return PI * radius ** 2

print(calculate_area(5))  # 78.53975

square = lambda x: x ** 2
print(square(9))  # 81

with open("data.txt", "w") as file:
    file.write("Sample content")

with open("data.txt", "r") as file:
    print(file.read())

class Animal:
    def __init__(self, name):
        self.name = name
        
    def speak(self):
        raise NotImplementedError

class Dog(Animal):
    def speak(self):
        return "Woof!"

buddy = Dog("Buddy")
print(buddy.speak())  # Woof!

import pandas as pd
data = {"Name": ["John", "Anna"], "Age": [28, 24]}
df = pd.DataFrame(data)
print(df.describe())

import matplotlib.pyplot as plt
plt.plot([1,2,3], [2,4,1])
plt.title("Basic Line Plot")
plt.show()

try:
    print(10 / 0)
except ZeroDivisionError:
    print("Cannot divide by zero!")
finally:
    print("Execution completed")