bpo-36018: Make "seed" into a keyword only argument (GH-12921)

rhettinger · web-flow · commit fb8c7d53326d · 2019-04-23T01:46:18.000-07:00
diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst
@@ -607,7 +607,7 @@ of applications in statistics.
        :exc:`StatisticsError` because it takes at least one point to estimate
        a central value and at least two points to estimate dispersion.
 
-    .. method:: NormalDist.samples(n, seed=None)
+    .. method:: NormalDist.samples(n, *, seed=None)
 
        Generates *n* random samples for a given mean and standard deviation.
        Returns a :class:`list` of :class:`float` values.
diff --git a/Lib/statistics.py b/Lib/statistics.py
@@ -797,7 +797,7 @@ def from_samples(cls, data):
         xbar = fmean(data)
         return cls(xbar, stdev(data, xbar))
 
-    def samples(self, n, seed=None):
+    def samples(self, n, *, seed=None):
         'Generate *n* samples for a given mean and standard deviation.'
         gauss = random.gauss if seed is None else random.Random(seed).gauss
         mu, sigma = self.mu, self.sigma
