Python Data Structures: Lists, Tuples, Dictionaries & Sets

Python Built-in Data Structures

# 1. Lists (Ordered, mutable)
tracks = ["PHP", "Python", "Java", "React"]
tracks.append("Next.js")

# 2. Dictionaries (Key-Value pairs)
course = {
    "title": "Complete Python 3.12",
    "is_free": True,
    "lessons_count": 25
}

# 3. Sets (Unique elements)
unique_tags = {"backend", "ai", "python", "backend"} # dupe ignored