Core Concept Mastery • Python Visual Series Module
In Python, an integer (`int`) is a whole number without a fractional part (no decimals). Integers can be positive, negative, or zero. They are typically used for counting, indexing, and discrete math operations. Python handles arbitrarily large integers, meaning their size is only limited by your computer's memory.
Python · Memory model
You can imagine each integer as a small row of boxes in memory. Some boxes are used by Python itself, and the rest hold the digits of the number.
Even a tiny number like 7 lives inside a Python int object: a few boxes for Python, a few boxes for the digits.