Code Mala Tang
Feb 25, 2025 · Fundamentals
Why Does 0.1 + 0.2 Not Equal 0.3 in Python? Understanding Floating‑Point Precision
Python’s unexpected 0.1 + 0.2 = 0.30000000000000004 result stems from binary floating‑point representation limits defined by the IEEE 754 standard, and the article explains this issue, rounding modes, and practical solutions such as the decimal module, fractions, math.isclose, and high‑precision NumPy types.
IEEE 754NumPyPrecision
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