Locus website scrape for PVOutput

from __future__ import print_function
import time
import sys
import subprocess
from pyvirtualdisplay import Display
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

# Requires xvfb, Firefox, geckodriver, PyVirtualDisplay, and Selenium.
# apt install xvfb
# apt install firefox
# pip install pyvirtualdisplay
# pip install selenium
# https://github.com/mozilla/geckodriver/releases

display = Display(visible=0, size=(800, 600))
display.start()

options = Options()
options.headless = True

username = 'email'
password = 'password'
PVOUTPUT_APIKEY = 'apikey'
PVOUTPUT_SYSTEMID = 'system id number'

# setup a web scraping session
browser = webdriver.Firefox(options=options)
browser.implicitly_wait(15)
browser.get('https://solarnoc.datareadings.com/legacy/login/')

# log into website
browser.find_element_by_id("username").send_keys(username)
browser.find_element_by_id("password").send_keys(password)
browser.find_element_by_xpath('//*[@class="btn btn-primary"]').click()

# grab power and energy values
power = browser.find_element_by_name("instantValue").text
energy = browser.find_element_by_name("lifetimeValue").text

if power == 'Offline':
   power = '0'

power = power.replace(',', '')
energy = energy.replace(',', '')

#Output values to a file
f = open('spreadsheet.csv','a')
print(time.strftime("%m/%d/%Y")+", "+time.strftime("%H:%M")+", "+power+", "+energy, file=f)
f.close()

# Upload to pvoutput.org
t_date = 'd={0}'.format(time.strftime('%Y%m%d'))
t_time = 't={0}'.format(time.strftime('%H:%M'))
t_energy = 'v1={0}'.format(1000*float(energy))
t_power = 'v2={0}'.format(1000*float(power))
cmd = ['/usr/bin/curl',
  '-d', t_date,
  '-d', t_time,
  '-d', t_energy,
  '-d', t_power,
  '-d', 'c1=1',
  '-H', 'X-Pvoutput-Apikey: ' + PVOUTPUT_APIKEY,
  '-H', 'X-Pvoutput-SystemId: ' + PVOUTPUT_SYSTEMID,
  'http://pvoutput.org/service/r2/addstatus.jsp']
# print(cmd)
ret = subprocess.call (cmd)
# print(ret)

browser.quit()
display.stop()