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[3.7] Improve readability of random module examples (GH-11884) #11885

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Merged
rhettinger merged 1 commit into from
Feb 15, 2019
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[3.7] Improve readability of random module examples (GH-11884) #11885

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8 changes: 6 additions & 2 deletions Doc/library/random.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -385,12 +385,16 @@ Simulations::

>>> # Estimate the probability of getting 5 or more heads from 7 spins
>>> # of a biased coin that settles on heads 60% of the time.
>>> trial = lambda: choices('HT', cum_weights=(0.60, 1.00), k=7).count('H') >= 5
>>> def trial():
... return choices('HT', cum_weights=(0.60, 1.00), k=7).count('H') >= 5
...
>>> sum(trial() for i in range(10000)) / 10000
0.4169

>>> # Probability of the median of 5 samples being in middle two quartiles
>>> trial = lambda : 2500 <= sorted(choices(range(10000), k=5))[2] < 7500
>>> def trial():
... return 2500 <= sorted(choices(range(10000), k=5))[2] < 7500
...
>>> sum(trial() for i in range(10000)) / 10000
0.7958

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