demo_forex.py

#! /usr/bin/env python
# -*- coding: UTF-8 -*-

import drivers
import time
import requests 
import datetime
import bs4

display = drivers.Lcd()
sleepSecond = 1
minute = 60
iteration = minute/sleepSecond

selectedCurrencyList = ["USD/TRY", "EUR/TRY", "EUR/USD", "GAU/TRY", u"BİST 100"]

fakeHeaders = {
    'User-Agent': 'Google Chrome'
}


def GetTime():
    currentTime = datetime.datetime.now()
    return currentTime.strftime("%d.%m %a %H:%M")


def PrintTime():
    display.lcd_display_string(GetTime(), 1)


def PrintCurrency(currency):
    display.lcd_display_string(currency, 2)


def PrintScreen(currency):
    display.lcd_clear()
    PrintTime()
    PrintCurrency(currency)


def GetCurrencyList():
    htmlResponse = requests.get(url="https://tr.investing.com/", headers=fakeHeaders)
    html = htmlResponse.content
    parsedHtml = bs4.BeautifulSoup(html, features="html.parser")
    htmlCurrencyList = parsedHtml.findAll("tr", {"class": "LeftLiContainer"})
    currencyTextList = list()
    for htmlCurrency in htmlCurrencyList:
        currencyName = htmlCurrency.find("td", {"class": "left bold first noWrap"}).find("a").text
        currencyValue = htmlCurrency.find("td", {"class": "lastNum"}).text
        if currencyName in selectedCurrencyList:
            currencyTextList.append(currencyName + " " + currencyValue)
    return currencyTextList

try:
    while True:
        currencyList = GetCurrencyList()
        if currencyList:
            for i in range(int(iteration/len(currencyList))):
                for item in currencyList:
                    PrintScreen(item)
                    time.sleep(sleepSecond)
        else:
            display.lcd_clear()
            PrintTime()
            time.sleep(sleepSecond)

except KeyboardInterrupt:
    print("Cleaning up!")
    display.lcd_clear()