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  <title>Python Online Course</title>
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<header>Python Online Course</header>

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  <div class="lesson">
    <h2>Lesson 1: What is Python?</h2>
    <p>Python is a powerful, easy-to-learn programming language used in apps, AI, games, data science, automation, websites, and more.</p>
    <pre>print("Hello, Python!")</pre>
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  <div class="lesson">
    <h2>Lesson 2: Variables</h2>
    <p>Variables store data. Python creates them automatically when you assign values.</p>
    <pre>x = 10
name = "Alex"
pi = 3.14</pre>
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    <h2>Lesson 3: Data Types</h2>
    <p>Common Python data types:</p>
    <ul>
      <li>String ? "Hello"</li>
      <li>Integer ? 5</li>
      <li>Float ? 5.8</li>
      <li>Boolean ? True / False</li>
      <li>List ? [1, 2, 3]</li>
      <li>Tuple ? (1, 2, 3)</li>
      <li>Dictionary ? {"name": "Alex"}</li>
    </ul>
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    <h2>Lesson 4: If Statements</h2>
    <p>If statements make decisions in programs.</p>
    <pre>age = 18
if age >= 18:
    print("Adult")
else:
    print("Minor")</pre>
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    <h2>Lesson 5: Loops</h2>
    <p>Loops repeat code multiple times.</p>
    <pre>for i in range(5):
    print(i)

x = 0
while x < 5:
    print(x)
    x += 1</pre>
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    <h2>Lesson 6: Functions</h2>
    <p>Functions are reusable blocks of code.</p>
    <pre>def greet(name):
    print("Hello", name)

greet("Alex")</pre>
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    <h2>Lesson 7: Lists</h2>
    <pre>fruits = ["apple", "banana", "orange"]
print(fruits[0])</pre>
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    <h2>Lesson 8: Dictionaries</h2>
    <pre>person = {"name": "Alex", "age": 15}
print(person["name"])</pre>
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    <h2>Lesson 9: Classes (OOP)</h2>
    <pre>class Dog:
    def __init__(self, name):
        self.name = name

mydog = Dog("Buddy")
print(mydog.name)</pre>
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