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Issue #20478: avoid special casing Counter in statistics

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Passing Counter objects to the Counter constructor is
special cased, going through iter() firsts ensures they
are handled the same way as any other iterable.

(Committing on Steven's behalf as I don't believe his
SSH key is registered yet)
This commit is contained in:
Nick Coghlan 2014-02-08 19:44:16 +10:00
parent ec1c8097c1
commit bfd68bf4ac
3 changed files with 12 additions and 3 deletions
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4
Lib/statistics.py
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@ -268,9 +268,7 @@ def _coerce_types(T1, T2):
def _counts(data):
# Generate a table of sorted (value, frequency) pairs.
if data is None:
raise TypeError('None is not iterable')
table = collections.Counter(data).most_common()
table = collections.Counter(iter(data)).most_common()
if not table:
return table
# Extract the values with the highest frequency.