Created
October 6, 2016 15:57
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dateparser.parse vs dateutil.parser.parse
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#!/usr/bin/env python3 | |
"""Compare (fuzzy) dateutils vs dateparser `parse` methods""" | |
import sys | |
from dateparser import parse as dp_parse | |
from datetime import datetime, timedelta | |
from dateutil.parser import parse as du_parse | |
NOW = datetime.now() | |
DP_SETTINGS = { | |
'RELATIVE_BASE': NOW, | |
} | |
EXPECTED_DATETIME = datetime(year=2016, month=9, day=1) | |
DATASET = ( | |
# (query, expected) | |
('2016/09/01', EXPECTED_DATETIME), | |
('2016-09-01', EXPECTED_DATETIME), | |
('09/01/2016', EXPECTED_DATETIME), | |
('09-01-2016', EXPECTED_DATETIME), | |
('09012016', EXPECTED_DATETIME), | |
('09/01/2016 15:20', EXPECTED_DATETIME.replace(hour=15, minute=20)), | |
('09/01/2016 at 15h20', EXPECTED_DATETIME.replace(hour=15, minute=20)), | |
('15 min ago', NOW - timedelta(minutes=15)), | |
('two hours ago', NOW - timedelta(hours=2)), | |
('a day ago', NOW - timedelta(days=1)), | |
('tuesday', ( | |
NOW.replace(hour=0, minute=0, second=0, microsecond=0) - \ | |
timedelta(days=(NOW.weekday() - 1)))), | |
('monday at noon', ( | |
NOW.replace(hour=12, minute=0, second=0, microsecond=0) - \ | |
timedelta(days=NOW.weekday()))), | |
) | |
def is_equal(time1, time2): | |
return time1 == time2 | |
def parse(parser, query, expected, **options): | |
try: | |
result = parser(query, **options) | |
except: | |
return 0 | |
if result and is_equal(result, expected): | |
return 1 | |
return 0 | |
def bench(dataset): | |
du_scores = [] | |
dp_scores = [] | |
template = '| {:25} | {:>10} | {:>10} |' | |
separator = template.format('-' * 25, '-' * 10, '-' * 10) | |
print(template.format('query', 'dateutil', 'dateparser')) | |
print(separator) | |
for query, expected in dataset: | |
du_score = parse(du_parse, query, expected, fuzzy=True) | |
dp_score = parse(dp_parse, query, expected, settings=DP_SETTINGS) | |
du_scores.append(du_score) | |
dp_scores.append(dp_score) | |
print(template.format(query, du_score, dp_score)) | |
print(separator) | |
print(template.format( | |
'total ({})'.format(len(du_scores)), | |
sum(du_scores), | |
sum(dp_scores)) | |
) | |
def main(): | |
bench(DATASET) | |
return 0 | |
if __name__ == '__main__': | |
sys.exit(main() or 0) |
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@megz15. Depends on the use case, I guess:
--start
and--end
parameters, you may want the best experience for your users, even if it takes a ms more to parse.