🌱 Junior Track 02 of 08

2. Core Data Types

Master essential Python data types: `Numbers (int, float, complex)`, `Text Strings (str)`, `Booleans (bool)`, `NoneType`, `Type Conversions`, `String Slicing`, and `Type Checking (isinstance)`.

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🎓 Junior Python Curriculum — Select Module

1️⃣ Fundamentals 2️⃣ Data Types 3️⃣ Operators 4️⃣ Conditionals 5️⃣ Loops 6️⃣ Collections 7️⃣ Comprehensions 8️⃣ Functions 9️⃣ *args & **kwargs 🔟 Scope & Namespaces 1️⃣1️⃣ OOP 1️⃣2️⃣ Exceptions 1️⃣3️⃣ File Handling 1️⃣4️⃣ Modules & Packages 1️⃣5️⃣ Virtual Environments 1️⃣6️⃣ Standard Library 1️⃣7️⃣ Iterators & Iterables 1️⃣8️⃣ Generators 1️⃣9️⃣ Decorators 2️⃣0️⃣ Context Managers 2️⃣1️⃣ Lambda Functions 2️⃣2️⃣ Functional Programming 2️⃣3️⃣ Type Hints 2️⃣4️⃣ Dataclasses 2️⃣5️⃣ Testing 2️⃣6️⃣ Debugging 2️⃣7️⃣ Logging 2️⃣8️⃣ JSON & Data 2️⃣9️⃣ Regular Expressions 3️⃣0️⃣ Databases

# JUNIOR PYTHON TRACK 02 — DATA TYPES

# 1. Numeric & String Types
count: int = 42
price: float = 19.99
raw_input: str = "100"

# 2. Type Conversions (Casting)
converted_number: int = int(raw_input)
is_valid: bool = bool(converted_number)

# 3. String Slicing
text: str = "PYTHON_MASTERCLASS"
prefix: str = text[:6]      # "PYTHON"
suffix: str = text[7:]      # "MASTERCLASS"
reversed_text: str = text[::-1] # Reversals

print(f"Prefix: {prefix}, Suffix: {suffix}")

$ python3 junior_datatypes.py
Prefix: PYTHON, Suffix: MASTERCLASS
Execution completed successfully.

import unittest

class TestJuniorDataTypes(unittest.TestCase):
    def test_type_casting(self):
        self.assertEqual(int("42"), 42)
        self.assertEqual(str(10.5), "10.5")

    def test_string_slicing(self):
        word = "PYTHON"
        self.assertEqual(word[::-1], "NOHTYP")

if __name__ == "__main__":
    unittest.main()

🌱 Junior Track 02 Master Reference

2. Core Data Types Breakdown

1️⃣ Strings & Slicing (`[start:stop:step]`)

                    s = "Hello World"

                    first = s[0]      # 'H'

                    sub = s[0:5]       # 'Hello'

                    rev = s[::-1]     # 'dlroW olleH'

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2. Core Data Types

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⚡ Core Data Types Overview

2. Core Data Types Breakdown

1️⃣ Strings & Slicing (`[start:stop:step]`)

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