bpo-39108: Document threading issues for random.gauss() by rhettinger · Pull Request #22928 · python/cpython

@@ -319,6 +319,13 @@ be found in any statistics text. deviation. This is slightly faster than the :func:`normalvariate` function defined below.
Multithreading note: When two threads call this function simultaneously, it is possible that they will receive the same return value. This can be avoided in three ways. 1) Have each thread use a different instance of the random number generator. 2) Put locks around all calls. 3) Use the slower, but thread-safe :func:`normalvariate` function instead.

.. function:: lognormvariate(mu, sigma)