PyPI recent updates for lbriv https://pypi.org/project/lbriv/ Recent updates to the Python Package Index for lbriv en 1.0.0 https://pypi.org/project/lbriv/1.0.0/ Black-76 pricing and Let's-Be-Rational implied volatility (Cython port of Peter Jaeckel's LetsBeRational) Sat, 11 Jul 2026 19:28:30 GMT