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Speed-up named tuple's _make() constructor.

This commit is contained in:
Raymond Hettinger 2008-01-06 22:11:54 +00:00
parent 35f8861386
commit 844f71b7e4
1 changed files with 2 additions and 2 deletions
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4
Lib/collections.py
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@ -65,9 +65,9 @@ def namedtuple(typename, field_names, verbose=False):
def __new__(cls, %(argtxt)s): def __new__(cls, %(argtxt)s):
return tuple.__new__(cls, (%(argtxt)s)) \n return tuple.__new__(cls, (%(argtxt)s)) \n
@classmethod @classmethod
def _make(cls, iterable): def _make(cls, iterable, new=tuple.__new__, len=len):
'Make a new %(typename)s object from a sequence or iterable' 'Make a new %(typename)s object from a sequence or iterable'
result = tuple.__new__(cls, iterable) result = new(cls, iterable)
if len(result) != %(numfields)d: if len(result) != %(numfields)d:
raise TypeError('Expected %(numfields)d arguments, got %%d' %% len(result)) raise TypeError('Expected %(numfields)d arguments, got %%d' %% len(result))
return result \n return result \n