Title: bpo-36018: Add properties for mean and stdev by rhettinger · Pull Request #12022 · python/cpython · GitHub
Open Graph Title: bpo-36018: Add properties for mean and stdev by rhettinger · Pull Request #12022 · python/cpython
X Title: bpo-36018: Add properties for mean and stdev by rhettinger · Pull Request #12022 · python/cpython
Description: Responding to suggestions on the tracker and some off-line suggestions. Davin suggested that english named accessors instead of greek letters would result in more intelligible user code. Steven suggested that the parameters still need to be mu and theta which are used elsewhere (and I noted those parameter names are used in linked-to resources). Michael suggested proving-out the API by seeing whether it generalized to Lognormal. I did so and found that Lognormal distribution parameters mu and sigma do not represent the mean and standard deviation of the lognormal distribution (instead, they are for the underlying regular normal distribution). Putting these ideas together, we have NormalDist parameterized by mu and sigma but offering English named properties for accessors. That gives lets us match other API that access mu and sigma, it matches the external resources on the topic, gives us clear english names in user code. The API extends nicely to LogNormal where the parameters and the summary statistic accessors are not the same. https://bugs.python.org/issue36018
Open Graph Description: Responding to suggestions on the tracker and some off-line suggestions. Davin suggested that english named accessors instead of greek letters would result in more intelligible user code. Steven sug...
X Description: Responding to suggestions on the tracker and some off-line suggestions. Davin suggested that english named accessors instead of greek letters would result in more intelligible user code. Steven sug...
Opengraph URL: https://github.com/python/cpython/pull/12022
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