def lighting(self, Outdorr, Parameter,
Control): # 补光策略，在currenttime 加了一个get_time()函数
while True:
if Control.get_lighting_1() == "off" and Control.get_lighting_2(
) == "off":
if get_current_month(
) > Parameter.month_to_open_lighting and get_current_month(
) < Parameter.month_to_close_lighting:
if get_current_time(
) > Parameter.period1_start_lighting and get_current_time(
) < Parameter.period1_stop_lighting:
if Outdoor.radiation < Parameter.radiation1_to_open_lighting:
Control.set_lighting_1("on")
open_time = get_time()
elif get_current_time(
) > Parameter.period2_start_lighting and get_current_time(
) < Parameter.period2_stop_lighting:
if Outdoor.radiation < Parameter.radiation2_to_open_lighting:
Control.set_lighting_1("on")
open_time2 = get_time()
elif Control.get_lighting_1() == "on" and Control.get_lighting_2(
) == "off":
t1 = int(get_time() - open_time)
t2 = int(get_time() - open_time2)
if t1 > 1750 and t1 < 1850:
Control.set_lighting_2("on")
if t2 > 1750 and t2 < 1850:
Control.set_lighting_2("on")
elif Control.get_lighting_1() == "on" and Control.get_lighting_2(
) == "on":
if get_current_time(
) > Parameter.period1_start_lighting and get_current_time(
) < Parameter.period1_stop_lighting:
if Outdoor.radiation > Parameter.radiation1_to_open_lighting:
Control.set_lighting_1("off")
stop_time = get_time()
elif get_current_time(
) > Parameter.period2_start_lighting and get_current_time(
) < Parameter.period2_stop_lighting:
if Outdoor.radiation > Parameter.radiation2_to_open_lighting:
Control.set_lighting_1("off")
stop_time2 = get_time()
else:
Control.set_lighting_1("off")
stop_time3 = get_time()
elif Control.get_lighting_1() == "off" and Control.get_lighting_2(
) == "on":
t3 = get_time() - stop_time3
t4 = get_time() - stop_time2
t5 = get_time() - stop_time
if t3 > 1750 and t3 < 1850:
Control.set_lighting_2("off")
if t4 > 1750 and t4 < 1850:
Control.set_lighting_2("off")
if t5 > 1750 and t5 < 1850:
Control.set_lighting_2("off")
def lighting_control(Outdoor, Parameter):
global t1, t2, t3, t4, t5, lighting_stop_time, lighting_stop_time2, lighting_stop_time3, lighting_open_time, lighting_open_time2
global auto_lighting_1, auto_lighting_2
month = int(get_current_month())
hour = int(get_current_hour())
if auto_lighting_1 == "off" and auto_lighting_2 == "off":
if month > Parameter.get_month_to_open_lighting() and month < Parameter.get_month_to_close_lighting():
if hour > Parameter.get_period_1_start_lighting() and hour < Parameter.get_period_1_stop_lighting():
if Outdoor.get_radiation() < Parameter.get_radiation_1_to_open_lighting():
bi_state_relay_output("lighting_1", "on")
auto_lighting_1 = "on"
lighting_open_time = get_time()
elif hour > Parameter.get_period_2_start_lighting() and hour < Parameter.get_period_2_stop_lighting():
if Outdoor.get_radiation() < Parameter.get_radiation_2_to_open_lighting():
bi_state_relay_output("lighting_2", "on")
auto_lighting_2 = "on"
lighting_open_time2 = get_time()
elif auto_lighting_1 == "on" and auto_lighting_2 == "off":
t1 = float(get_time() - lighting_open_time)
t2 = float(get_time() - lighting_open_time2)
if t1 > 30 and t1 < 60:
bi_state_relay_output("lighting_2", "on")
auto_lighting_2 = "on"
if t2 > 30 and t2 < 60:
bi_state_relay_output("lighting_2", "on")
auto_lighting_2 = "on"
elif auto_lighting_1 == "on" and auto_lighting_2 == "on":
if hour > Parameter.get_period_1_start_lighting() and hour < Parameter.get_period_1_stop_lighting():
if Outdoor.get_radiation() > Parameter.get_radiation_1_to_open_lighting():
bi_state_relay_output("lighting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time = get_time()
elif hour > Parameter.get_period_2_start_lighting() and hour < Parameter.get_period_2_stop_lighting():
if Outdoor.get_radiation() > Parameter.get_radiation_2_to_open_lighting():
bi_state_relay_output("lighting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time2 = get_time()
else:
bi_state_relay_output("lighting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time3 = get_time()
elif auto_lighting_1 == "off" and auto_lighting_2 == "on":
t3 = get_time() - lighting_stop_time3
t4 = get_time() - lighting_stop_time2
t5 = get_time() - lighting_stop_time
if t3 > 30 and t3 < 60:
bi_state_relay_output("lighting_2", "off")
auto_lighting_2 = "off"
if t4 > 30 and t4 < 60:
bi_state_relay_output("lighting_2", "off")
auto_lighting_2 = "off"
if t5 > 30 and t5 < 60:
bi_state_relay_output("lighting_2", "off")
auto_lighting_2 = "off"
def lighting(self,Outdorr,Parameter,Control):#补光策略，在currenttime 加了一个get_time()函数
while True:
if Control.get_lighting_1()=="off" and Control.get_lighting_2()=="off":
if get_current_month()>Parameter.month_to_open_lighting and get_current_month()<Parameter.month_to_close_lighting:
if get_current_time()>Parameter.period1_start_lighting and get_current_time()<Parameter.period1_stop_lighting:
if Outdoor.radiation<Parameter.radiation1_to_open_lighting:
Control.set_lighting_1("on")
open_time=get_time()
elif get_current_time()>Parameter.period2_start_lighting and get_current_time()<Parameter.period2_stop_lighting:
if Outdoor.radiation<Parameter.radiation2_to_open_lighting:
Control.set_lighting_1("on")
open_time2=get_time()
elif Control.get_lighting_1()=="on" and Control.get_lighting_2()=="off":
t1=int(get_time()-open_time)
t2=int(get_time()-open_time2)
if t1>1750 and t1<1850:
Control.set_lighting_2("on")
if t2>1750 and t2<1850:
Control.set_lighting_2("on")
elif Control.get_lighting_1()=="on" and Control.get_lighting_2()=="on":
if get_current_time()>Parameter.period1_start_lighting and get_current_time()<Parameter.period1_stop_lighting:
if Outdoor.radiation>Parameter.radiation1_to_open_lighting:
Control.set_lighting_1("off")
stop_time=get_time()
elif get_current_time()>Parameter.period2_start_lighting and get_current_time()<Parameter.period2_stop_lighting:
if Outdoor.radiation>Parameter.radiation2_to_open_lighting:
Control.set_lighting_1("off")
stop_time2=get_time()
else:
Control.set_lighting_1("off")
stop_time3=get_time()
elif Control.get_lighting_1()=="off" and Control.get_lighting_2()=="on":
t3=get_time()-stop_time3
t4=get_time()-stop_time2
t5=get_time()-stop_time
if t3>1750 and t3<1850:
Control.set_lighting_2("off")
if t4>1750 and t4<1850:
Control.set_lighting_2("off")
if t5>1750 and t5<1850:
Control.set_lighting_2("off")
def lighting_control(Control, Outdoor, Parameter):
global lighting_stop_time, lighting_stop_time2, lighting_stop_time3
auto_lighting_1 = Control.get_lighting_1()
auto_lighting_2 = Control.get_lighting_2()
if auto_lighting_1 == "off" and auto_lighting_2 == "off":
if get_current_month() > Parameter.get_month_to_open_lighting() and get_current_month() < Parameter.get_month_to_close_lighting():
if get_current_time() > Parameter.get_period_1_start_lighting() and get_current_time() < Parameter.get_period_1_stop_lighting():
if Outdoor.get_radiation() < Parameter.get_radiation_1_to_open_lighting():
# Control.set_lighting_1("on")
bi_state_relay_output("lighting_1", "on")
auto_lighting_1 = "on"
lighting_open_time = get_time()
elif get_current_time() > Parameter.get_period_2_start_lighting() and get_current_time() < Parameter.get_period_2_stop_lighting():
if Outdoor.get_radiation() < Parameter.get_radiation_2_to_open_lighting():
# Control.set_lighting_1("on")
bi_state_relay_output("lighting_2", "on")
auto_lighting_2 = "on"
lighting_open_time2 = get_time()
elif auto_lighting_1 == "on" and auto_lighting_2 == "off":
t1 = int(get_time() - lighting_open_time)
t2 = int(get_time() - lighting_open_time2)
if t1 > 1750 and t1 < 1850:
bi_state_relay_output("ligting_2", "on")
auto_lighting_2 = "on"
# Control.set_lighting_2("on")
if t2 > 1750 and t2 < 1850:
# Control.set_lighting_2("on")
bi_state_relay_output("ligting_2", "on")
auto_lighting_2 = "on"
elif auto_lighting_1 == "on" and auto_lighting_2 == "on":
if get_current_time() > Parameter.get_period_1_start_lighting() and get_current_time() < Parameter.get_period_1_stop_lighting():
if Outdoor.get_radiation() > Parameter.get_radiation_1_to_open_lighting():
# Control.set_lighting_1("off")
bi_state_relay_output("ligting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time = get_time()
elif get_current_time() > Parameter.get_period_2_start_lighting() and get_current_time() < Parameter.get_period_2_stop_lighting():
if Outdoor.get_radiation() > Parameter.get_radiation_2_to_open_lighting():
# Control.set_lighting_1("off")
bi_state_relay_output("ligting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time2 = get_time()
else:
# Control.set_lighting_1("off")
bi_state_relay_output("ligting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time3 = get_time()
elif auto_lighting_1 == "off" and auto_lighting_2 == "on":
t3 = get_time() - lighting_stop_time3
t4 = get_time() - lighting_stop_time2
t5 = get_time() - lighting_stop_time
if t3 > 1750 and t3 < 1850:
bi_state_relay_output("ligting_2", "off")
# Control.set_lighting_2("off")
if t4 > 1750 and t4 < 1850:
bi_state_relay_output("ligting_2", "off")
# Control.set_lighting_2("off")
if t5 > 1750 and t5 < 1850:
bi_state_relay_output("ligting_2", "off")
# Control.set_lighting_2("off")
else:
bi_state_relay_output("ligting_2", "off")
bi_state_relay_output("ligting_1", "off")
def roof_vent_control(Outdoor, Parameter, Indoor):
global temperature_set_temp0, temperature_set_temp1, temperature_set_temp2, angle, auto_roof_vent_north, auto_roof_vent_south, roof_start_time, roof_state
current_hour = get_current_hour()
roof_start_time = get_time()
if bad_weather == "true":
if auto_roof_vent_north == "on" and auto_roof_vent_south == "on":
roof_state = "open all to close"
if angle == "half":
roof_state = "open half to close"
elif angle == "small":
roof_state = "open small to close"
auto_roof_vent_north = "off"
auto_roof_vent_south = "off"
angle = "zero"
else:
if current_hour >= Parameter.get_time_1(
) and current_hour < Parameter.get_time_2():
temperature_set_temp0 = float(Parameter.get_temperature_1())
elif current_hour >= Parameter.get_time_2(
) and current_hour < Parameter.get_time_3():
temperature_set_temp0 = float(Parameter.get_temperature_2())
elif current_hour >= Parameter.get_time_3(
) and current_hour < Parameter.get_time_4():
temperature_set_temp0 = float(Parameter.get_temperature_3())
else:
temperature_set_temp0 = float(Parameter.get_temperature_4())
# humidity influence on temperature
if float(Parameter.get_humidity_influence_range_of_air_temperature()
) == 0:
print "humidity_influence_range_of_air_temperature can not be 0"
elif float(Parameter.get_expect_humidity()) == 95:
print "expect_humidity can not be 95%"
else:
if float(Outdoor.get_humidity()) <= (
float(Parameter.get_expect_humidity()) - 5 -
float(Parameter.
get_humidity_influence_range_of_air_temperature())):
temperature_set_temp1 = temperature_set_temp0 + float(
Parameter.get_low_humidity_influence_on_air_temperature())
elif float(Outdoor.get_humidity()) <= (
float(Parameter.get_expect_humidity()) - 5):
tmpt = (float(Parameter.get_expect_humidity(
)) - 5 - float(Outdoor.get_humidity())) * float(
Parameter.get_low_humidity_influence_on_air_temperature()
) / float(Parameter.
get_humidity_influence_range_of_air_temperature())
temperature_set_temp1 = temperature_set_temp0 + tmpt
elif float(Outdoor.get_humidity()) >= (
float(Parameter.get_expect_humidity()) + 5):
tmpt = (float(Outdoor.get_humidity()) - float(
Parameter.get_expect_humidity()) - 5) * float(
Parameter.
get_high_humidity_influence_on_air_temperature()) / (
100 - 5 - float(Parameter.get_expect_humidity()))
temperature_set_temp1 = temperature_set_temp0 + tmpt
else:
temperature_set_temp1 = temperature_set_temp0
# light influence on temperature
if Outdoor.get_radiation() < Parameter.get_expect_light():
temperature_set_temp2 = temperature_set_temp1
else:
temperature_set_temp2 = temperature_set_temp1 - float(
Parameter.get_light_influence_on_air_temperature_slope()) * (
float(Outdoor.get_radiation()) -
float(Parameter.get_expect_light()))
if temperature_set_temp2 > (temperature_set_temp1 + float(
Parameter.get_low_light_influence_on_temperature())):
temperature_set_temp2 = temperature_set_temp1 + float(
Parameter.get_low_light_influence_on_temperature())
elif temperature_set_temp2 < (temperature_set_temp1 - float(
Parameter.get_high_light_influence_on_temperature())):
temperature_set_temp2 = temperature_set_temp1 - float(
Parameter.get_high_light_influence_on_temperature())
else:
if temperature_set_temp2 == 0:
temperature_set_temp2 = 0
if Outdoor.get_temperature() <= Parameter.get_frost_temperature():
if auto_roof_vent_north == "on" and auto_roof_vent_south == "on":
roof_state = "open all to close"
if angle == "half":
roof_state = "open half to close"
else:
roof_state = "open small to close"
auto_roof_vent_north = "off"
auto_roof_vent_south = "off"
angle = "zero"
elif Outdoor.get_temperature(
) <= Parameter.get_indoor_temperature_lower_limit():
# small angle
if auto_roof_vent_north == "off" and auto_roof_vent_south == "off":
roof_state = "close to open small"
if angle == "all":
roof_state = "open all to open small"
elif angle == "half":
roof_state = "open half to open small"
auto_roof_vent_north = "on"
auto_roof_vent_south = "on"
angle = "small"
elif Outdoor.get_temperature() <= temperature_set_temp2:
# open half
if auto_roof_vent_north == "off" and auto_roof_vent_south == "off":
roof_state = "close to open half"
if angle == "small":
roof_state = "open small to half"
elif angle == "all":
roof_state = "open all to open half"
roof_start_time = get_time()
auto_roof_vent_north = "on"
auto_roof_vent_south = "on"
angle = "half"
else:
#
if auto_roof_vent_north == "off" and auto_roof_vent_south == "off":
roof_state = "close to open all"
if angle == "small":
roof_state = "open half to all"
elif angle == "half":
roof_state = "open half to open all"
auto_roof_vent_north = "on"
auto_roof_vent_south = "on"
angle = "all"
return roof_state
def lighting_control(Control, Outdoor, Parameter):
global lighting_stop_time, lighting_stop_time2, lighting_stop_time3
auto_lighting_1 = Control.get_lighting_1()
auto_lighting_2 = Control.get_lighting_2()
if auto_lighting_1 == "off" and auto_lighting_2 == "off":
if get_current_month() > Parameter.get_month_to_open_lighting(
) and get_current_month() < Parameter.get_month_to_close_lighting():
if get_current_time() > Parameter.get_period_1_start_lighting(
) and get_current_time() < Parameter.get_period_1_stop_lighting():
if Outdoor.get_radiation(
) < Parameter.get_radiation_1_to_open_lighting():
# Control.set_lighting_1("on")
bi_state_relay_output("lighting_1", "on")
auto_lighting_1 = "on"
lighting_open_time = get_time()
elif get_current_time() > Parameter.get_period_2_start_lighting(
) and get_current_time() < Parameter.get_period_2_stop_lighting():
if Outdoor.get_radiation(
) < Parameter.get_radiation_2_to_open_lighting():
# Control.set_lighting_1("on")
bi_state_relay_output("lighting_2", "on")
auto_lighting_2 = "on"
lighting_open_time2 = get_time()
elif auto_lighting_1 == "on" and auto_lighting_2 == "off":
t1 = int(get_time() - lighting_open_time)
t2 = int(get_time() - lighting_open_time2)
if t1 > 1750 and t1 < 1850:
bi_state_relay_output("ligting_2", "on")
auto_lighting_2 = "on"
# Control.set_lighting_2("on")
if t2 > 1750 and t2 < 1850:
# Control.set_lighting_2("on")
bi_state_relay_output("ligting_2", "on")
auto_lighting_2 = "on"
elif auto_lighting_1 == "on" and auto_lighting_2 == "on":
if get_current_time() > Parameter.get_period_1_start_lighting(
) and get_current_time() < Parameter.get_period_1_stop_lighting():
if Outdoor.get_radiation(
) > Parameter.get_radiation_1_to_open_lighting():
# Control.set_lighting_1("off")
bi_state_relay_output("ligting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time = get_time()
elif get_current_time() > Parameter.get_period_2_start_lighting(
) and get_current_time() < Parameter.get_period_2_stop_lighting():
if Outdoor.get_radiation(
) > Parameter.get_radiation_2_to_open_lighting():
# Control.set_lighting_1("off")
bi_state_relay_output("ligting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time2 = get_time()
else:
# Control.set_lighting_1("off")
bi_state_relay_output("ligting_1", "off")
auto_lighting_1 = "off"
lighting_stop_time3 = get_time()
elif auto_lighting_1 == "off" and auto_lighting_2 == "on":
t3 = get_time() - lighting_stop_time3
t4 = get_time() - lighting_stop_time2
t5 = get_time() - lighting_stop_time
if t3 > 1750 and t3 < 1850:
bi_state_relay_output("ligting_2", "off")
# Control.set_lighting_2("off")
if t4 > 1750 and t4 < 1850:
bi_state_relay_output("ligting_2", "off")
# Control.set_lighting_2("off")
if t5 > 1750 and t5 < 1850:
bi_state_relay_output("ligting_2", "off")
# Control.set_lighting_2("off")
else:
bi_state_relay_output("ligting_2", "off")
bi_state_relay_output("ligting_1", "off")
@author: Zxh
'''
from autorun import auto_run_main
from currenttime import get_time
from indoor import Indoor
from outdoor import Outdoor
from parameter import Parameter
from arm_project.control import Control
node0 = Indoor('node0')
o = Outdoor()
c = Control()
p = Parameter()
p.set_expect_humidity("80")
p.set_humidity_influence_range_of_air_temperature("5")
p.set_high_humidity_influence_on_air_temperature("3")
p.set_low_humidity_influence_on_air_temperature("4")
p.set_light_influence_on_air_temperature_slope("0.7")
p.set_roof_vent_open_time("10")
p.set_shade_screen_in_time("5")
p.set_shade_screen_out_time("7")
p.set_side_vent_time("9")
start_time = get_time()
auto_run_main(node0, o, c, p)
def roof_vent_control(Outdoor, Parameter, Indoor):
global temperature_set_temp0, temperature_set_temp1, temperature_set_temp2, angle, auto_roof_vent_north, auto_roof_vent_south, roof_start_time, roof_state
current_hour = get_current_hour()
roof_start_time = get_time()
if bad_weather == "true":
if auto_roof_vent_north == "on" and auto_roof_vent_south == "on":
roof_state = "open all to close"
if angle == "half":
roof_state = "open half to close"
elif angle == "small":
roof_state = "open small to close"
auto_roof_vent_north = "off"
auto_roof_vent_south = "off"
angle = "zero"
else:
if current_hour >= Parameter.get_time_1() and current_hour < Parameter.get_time_2():
temperature_set_temp0 = float(Parameter.get_temperature_1())
elif current_hour >= Parameter.get_time_2() and current_hour < Parameter.get_time_3():
temperature_set_temp0 = float(Parameter.get_temperature_2())
elif current_hour >= Parameter.get_time_3() and current_hour < Parameter.get_time_4():
temperature_set_temp0 = float(Parameter.get_temperature_3())
else:
temperature_set_temp0 = float(Parameter.get_temperature_4())
# humidity influence on temperature
if float(Parameter.get_humidity_influence_range_of_air_temperature()) == 0:
print "humidity_influence_range_of_air_temperature can not be 0"
elif float(Parameter.get_expect_humidity()) == 95:
print "expect_humidity can not be 95%"
else:
if float(Outdoor.get_humidity()) <= (float(Parameter.get_expect_humidity()) - 5 - float(
Parameter.get_humidity_influence_range_of_air_temperature())):
temperature_set_temp1 = temperature_set_temp0 + float(
Parameter.get_low_humidity_influence_on_air_temperature())
elif float(Outdoor.get_humidity()) <= (float(Parameter.get_expect_humidity()) - 5):
tmpt = (float(Parameter.get_expect_humidity()) - 5 - float(Outdoor.get_humidity())) * float(
Parameter.get_low_humidity_influence_on_air_temperature()) / float(
Parameter.get_humidity_influence_range_of_air_temperature())
temperature_set_temp1 = temperature_set_temp0 + tmpt
elif float(Outdoor.get_humidity()) >= (float(Parameter.get_expect_humidity()) + 5):
tmpt = (float(Outdoor.get_humidity()) - float(Parameter.get_expect_humidity()) - 5) * float(
Parameter.get_high_humidity_influence_on_air_temperature()) / (
100 - 5 - float(Parameter.get_expect_humidity()))
temperature_set_temp1 = temperature_set_temp0 + tmpt
else:
temperature_set_temp1 = temperature_set_temp0
# light influence on temperature
if Outdoor.get_radiation() < Parameter.get_expect_light():
temperature_set_temp2 = temperature_set_temp1
else:
temperature_set_temp2 = temperature_set_temp1 - float(
Parameter.get_light_influence_on_air_temperature_slope()) * (float(Outdoor.get_radiation()) - float(
Parameter.get_expect_light()))
if temperature_set_temp2 > (temperature_set_temp1 + float(Parameter.get_low_light_influence_on_temperature())):
temperature_set_temp2 = temperature_set_temp1 + float(Parameter.get_low_light_influence_on_temperature())
elif temperature_set_temp2 < (
temperature_set_temp1 - float(Parameter.get_high_light_influence_on_temperature())):
temperature_set_temp2 = temperature_set_temp1 - float(Parameter.get_high_light_influence_on_temperature())
else:
if temperature_set_temp2 == 0:
temperature_set_temp2 = 0
if Outdoor.get_temperature() <= Parameter.get_frost_temperature():
if auto_roof_vent_north == "on" and auto_roof_vent_south == "on":
roof_state = "open all to close"
if angle == "half":
roof_state = "open half to close"
else:
roof_state = "open small to close"
auto_roof_vent_north = "off"
auto_roof_vent_south = "off"
angle = "zero"
elif Outdoor.get_temperature() <= Parameter.get_indoor_temperature_lower_limit():
# small angle
if auto_roof_vent_north == "off" and auto_roof_vent_south == "off":
roof_state = "close to open small"
if angle == "all":
roof_state = "open all to open small"
elif angle == "half":
roof_state = "open half to open small"
auto_roof_vent_north = "on"
auto_roof_vent_south = "on"
angle = "small"
elif Outdoor.get_temperature() <= temperature_set_temp2:
# open half
if auto_roof_vent_north == "off" and auto_roof_vent_south == "off":
roof_state = "close to open half"
if angle == "small":
roof_state = "open small to half"
elif angle == "all":
roof_state = "open all to open half"
roof_start_time = get_time()
auto_roof_vent_north = "on"
auto_roof_vent_south = "on"
angle = "half"
else:
#
if auto_roof_vent_north == "off" and auto_roof_vent_south == "off":
roof_state = "close to open all"
if angle == "small":
roof_state = "open half to all"
elif angle == "half":
roof_state = "open half to open all"
auto_roof_vent_north = "on"
auto_roof_vent_south = "on"
angle = "all"
return roof_state
''' @author: Zxh ''' from currenttime import get_time from time import sleep a = "2016-06-15 8:30" b = "1015" print a > b a = [1, 3, 5] print a a = 0.0 print a == 0 a = 7 b = "6" print a > b a = get_time() sleep(10) b = get_time() print b - a