humid.py

#!/usr/bin/python3
import airdata
import os
import time
import sys
import traceback

airdata_inst = airdata.Energy()
extract = float(sys.argv[1])


def get_humidity():
	global airdata_inst, extract
	day = 60 * 22
	templist = []
	data = os.popen("tail -n " + str(int(day)) + " ./RAM/data.log")
	try:
		sunrise = int(os.popen("./forcast2.0.py sun").readlines()[0].split(":")[0])
	except:
		sunrise = 6
	for each in data.readlines():
		tmp = each.split(":")
		try:
			if sunrise - 1 <= time.localtime(float(tmp[0]))[3] <= sunrise + 1 and \
					float(tmp[0]) > time.time() - (3 * 3600):
						templist.append(float(tmp[5]))
			else:
				# print time.localtime(float(tmp[0]))[3]
				pass
		except:
			print("error getting sunrise temp ranges")
	# print templist
	if len(templist) > 0:
		inlet_min = sum(templist)/len(templist)
	else:
		try:
			inlet_min = float(open("RAM/latest_static", 'r').read())
		except:
			traceback.print_exc()
			raise IndexError
	airdata_inst.sat_vapor_press(extract)
	bottom = airdata_inst.pw
	airdata_inst.sat_vapor_press(inlet_min)
	top = airdata_inst.pw

	# adjustmet to closer match RHwmo below zero saturations
	if inlet_min < 0:
		top = airdata_inst.pw + bottom * (float(inlet_min * -1.05) / 100)

	print(top / bottom * 100, inlet_min)

# input : indoor temp
# output: relative humidity as expressed by indoor temp last 24hrs min temp

try:
	get_humidity()
except:
	print(-60, -1)
	traceback.print_exc()