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from __future__ import print_function
from datetime import datetime
from time import time
import udatetime
RFC3339_DATE = '2016-07-18'
RFC3339_TIME = '12:58:26.485897+02:00'
RFC3339_DATE_TIME = RFC3339_DATE + 'T' + RFC3339_TIME
RFC3339_DATE_TIME_DTLIB = RFC3339_DATE_TIME[:-6]
DATE_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S.%f'
DATETIME_OBJ = datetime.strptime(RFC3339_DATE_TIME_DTLIB, DATE_TIME_FORMAT)
TIME = time()
def benchmark_parse():
def datetime_strptime():
datetime.strptime(RFC3339_DATE_TIME_DTLIB, DATE_TIME_FORMAT)
def udatetime_parse():
udatetime.from_string(RFC3339_DATE_TIME)
return (datetime_strptime, udatetime_parse)
def benchmark_format():
def datetime_strftime():
DATETIME_OBJ.strftime(DATE_TIME_FORMAT)
def udatetime_format():
udatetime.to_string(DATETIME_OBJ)
return (datetime_strftime, udatetime_format)
def benchmark_utcnow():
def datetime_utcnow():
datetime.utcnow()
def udatetime_utcnow():
udatetime.utcnow()
return (datetime_utcnow, udatetime_utcnow)
def benchmark_now():
def datetime_now():
datetime.now()
def udatetime_now():
udatetime.now()
return (datetime_now, udatetime_now)
def benchmark_utcnow_to_string():
def datetime_utcnow_to_string():
datetime.utcnow().strftime(DATE_TIME_FORMAT)
def udatetime_utcnow_to_string():
udatetime.utcnow_to_string()
return (datetime_utcnow_to_string, udatetime_utcnow_to_string)
def benchmark_now_to_string():
def datetime_now_to_string():
datetime.now().strftime(DATE_TIME_FORMAT)
def udatetime_now_to_string():
udatetime.now_to_string()
return (datetime_now_to_string, udatetime_now_to_string)
def benchmark_fromtimestamp():
def datetime_fromtimestamp():
datetime.fromtimestamp(TIME)
def udatetime_fromtimestamp():
udatetime.fromtimestamp(TIME)
return (datetime_fromtimestamp, udatetime_fromtimestamp)
def benchmark_utcfromtimestamp():
def datetime_utcfromtimestamp():
datetime.utcfromtimestamp(TIME)
def udatetime_utcfromtimestamp():
udatetime.utcfromtimestamp(TIME)
return (datetime_utcfromtimestamp, udatetime_utcfromtimestamp)
if __name__ == '__main__':
import timeit
benchmarks = [
benchmark_parse,
benchmark_format,
benchmark_utcnow,
benchmark_now,
benchmark_utcnow_to_string,
benchmark_now_to_string,
benchmark_fromtimestamp,
benchmark_utcfromtimestamp,
]
print('Executing benchmarks ...')
for k in benchmarks:
print('\n============ %s' % k.__name__)
mins = []
for func in k():
times =\
timeit.repeat('func()', setup='from __main__ import func')
t = min(times)
mins.append(t)
print(func.__name__, t)
win = False
if mins[0] > mins[1]:
win = True
mins = sorted(mins)
diff = mins[1] / mins[0]
if win:
print('udatetime is %.01f times faster' % diff)
else:
print('udatetime is %.01f times slower' % diff)
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