Raymond Hettinger added the comment:
FWIW, here are some variants (with differing degrees of brevity, clarity, and
performance):
def choice(self, seq):
"""Choose a random element from a non-empty sequence."""
n = len(seq)
i = int(self.random() * n)
if i == n:
i = n - 1
return seq[i]
def choice(self, seq):
"""Choose a random element from a non-empty sequence."""
try:
return seq[int(self.random() * len(seq))]
except IndexError:
return seq[-1]
def choice(self, seq):
"""Choose a random element from a non-empty sequence."""
n = len(seq)
return seq[min(int(self.random() * n), n-1)]
----------
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