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author | Paul Ganssle <paul@ganssle.io> | 2018-05-07 12:01:17 -0400 |
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committer | Paul Ganssle <paul@ganssle.io> | 2018-05-07 12:44:28 -0400 |
commit | 16561fc99361979e88cccbd135393b06b1af7e90 (patch) | |
tree | f10f88f2b5bd2323fdee94b9fe21bebd4ccc9b9e /dateutil/parser | |
parent | 3364cdb0abcf6be4ce15ef3b2db68b35711229f5 (diff) | |
download | dateutil-16561fc99361979e88cccbd135393b06b1af7e90.tar.gz |
Performance improvements in resolve_from_stridxs
Diffstat (limited to 'dateutil/parser')
-rw-r--r-- | dateutil/parser/_parser.py | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/dateutil/parser/_parser.py b/dateutil/parser/_parser.py index 04bc539..9d2bb79 100644 --- a/dateutil/parser/_parser.py +++ b/dateutil/parser/_parser.py @@ -458,14 +458,11 @@ class _ymd(list): raise ValueError('Year is already set') self.ystridx = len(self) - 1 - def _resolve_from_stridxs(self): + def _resolve_from_stridxs(self, strids): """ Try to resolve the identities of year/month/day elements using ystridx, mstridx, and dstridx, if enough of these are specified. """ - strids = {'y': self.ystridx, 'm': self.mstridx, 'd': self.dstridx} - strids = {key: strids[key] for key in strids if strids[key] is not None} - if len(self) == 3 and len(strids) == 2: # we can back out the remaining stridx value missing = [x for x in range(3) if x not in strids.values()] @@ -476,19 +473,21 @@ class _ymd(list): strids[key] = val assert len(self) == len(strids) # otherwise this should not be called - out = {'y': None, 'm': None, 'd': None} - out.update({key: self[strids[key]] for key in strids}) - return (out['y'], out['m'], out['d']) + out = {key: self[strids[key]] for key in strids} + return (out.get('y'), out.get('m'), out.get('d')) def resolve_ymd(self, yearfirst, dayfirst): len_ymd = len(self) year, month, day = (None, None, None) - strids = {'y': self.ystridx, 'm': self.mstridx, 'd': self.dstridx} - strids = {key: strids[key] for key in strids if strids[key] is not None} + strids = (('y', self.ystridx), + ('m', self.mstridx), + ('d', self.dstridx)) + + strids = {key: val for key, val in strids if val is not None} if (len(self) == len(strids) > 0 or (len(self) == 3 and len(strids) == 2)): - return self._resolve_from_stridxs() + return self._resolve_from_stridxs(strids) mstridx = self.mstridx |