def setUpClass(cls):
from server.forecasting.statistical.build_extension import build_holtwinters_extension
# compile and link holtwinters_fast module
build_holtwinters_extension()
#make them accessible everywhere
global Cdouble_seasonal, Cmultiplicative
from server.forecasting.statistical.holtwinters_fast import double_seasonal as Cdouble_seasonal
from server.forecasting.statistical.holtwinters_fast import multiplicative as Cmultiplicative
import logging
from django.utils.timezone import utc
from server.settings import BASE_DIR, CYTHON_SUPPORT
""""try to import compiled holtwinters (double seasonal) extension by building it.
if this fails, the standard holtwinters is used. """
fast_hw = False
if (CYTHON_SUPPORT):
try:
from server.forecasting.statistical.build_extension import build_holtwinters_extension
try:
t0 = time.time()
build_holtwinters_extension() #compile and link
#if function takes less than 8 seconds, the module was probably already built before
fresh_build = time.time() - t0 > 8
from server.forecasting.statistical.holtwinters_fast import double_seasonal, multiplicative
fast_hw = True
if fresh_build:
print "cython extension built and imported"
except Exception as e:
print "error while building. ", e
print "check ecoControl.log"
except Exception as e:
print "cython probably not installed", e
if not fast_hw:
if (CYTHON_SUPPORT):
print "falling back to python holt-winters"
import calendar
from server.forecasting.statistical import StatisticalForecast
from server.settings import BASE_DIR, CYTHON_SUPPORT
import os
import time
""""try to import compiled holtwinters (double seasonal) extension by building it.
if this fails, the standard holtwinters is used. """
fast_hw = False
if (CYTHON_SUPPORT):
try:
from server.forecasting.statistical.build_extension import build_holtwinters_extension
try:
t0 = time.time()
build_holtwinters_extension() #compile and link
#if function takes less than 10 seconds, the module was probably already built before
fresh_build = time.time() - t0 > 10
from server.forecasting.statistical.holtwinters_fast import double_seasonal, multiplicative
fast_hw = True
if fresh_build:
print "cython extension built and imported"
except Exception as e:
print "error while building. ", e
print "check ecoControl.log"
except Exception as e:
print "cython probably not installed", e
if not fast_hw:
if (CYTHON_SUPPORT):
print "falling back to python holt-winters"
