bigcharts for finviz lib

gistfile1.txt

 #add function in screener.py
 def get_bigcharts(self, freq='2', size='4', type='12', ma='2', maval = '10,40', time ='10', style='340',):
        """
        Downloads the charts of all tickers shown by the table from BigCharts.com.
        :param freq: table period eg. : '2' - weekly , '1'- daily  or '8' for hourly period
        :type freq: str
        :param size: table size eg.: '1' for the smallest or '4' for the biggest - choose '1'-'2'-'3'-'4'
        :type size: str
        :param type: chart type: '4' for candles or '1' for HLC or '128' for Logarithmic bar or '2' for OHLC or '340' for Close Line
        :type type: str
        :param ma: simple moving average: '1' , '2' or '3' - number of MA line
        :type ma: str
        :param maval: moving average periods: for example '21,50,200' - for ma = 3
        :type maval: str
        :param time: time period showed on the chart:'20' -all,'13' to '8' -10,5,4,3,2,1 Y, '19' -YTD, '7'-'4' -6,3,2,1 M, '18'-10D 
        :type time: str
        :param style:chart style:'320' - yellow and black, '340' - white and blue
        :type style: str
        
        
        """
   
        payload = {
            'freq': freq,
            'size': size,
            'type': type,
            'ma': ma,
            'maval': maval,
            'time': time,
            'style': style,
            'lf2': '67108864',
            'lf': '268435456'
        } # lf = Volume+ with color bar & SMA50 (change to '1' for simple Volume, lf2 = rolling EPS low panel)

        base_url = 'https://api.wsj.net/api/kaavio/charts/big.chart?'  + urlencode(payload)
        chart_urls = []

        for row in self.data:
            chart_urls.append(base_url + f"&symb={row.get('Ticker')}")

        async_connector = Connector(scrape.download_chart_image, chart_urls)
        async_connector.run_connector()   
        
 #make change in scraper_functions.py
 def download_chart_image(page_content, url):
    """ Downloads a .jpg image of a chart into the "charts" folder. """

    try: # add TRY to working with the different urls from finviz and bigcharts
        
        file_name = url.split('t=')[1] + '.jpg'
    except:
        file_name = url.split('symb=')[1] + '.jpg'
    if not os.path.exists('charts'):
        os.mkdir('charts')

    with open(os.path.join('charts', file_name), 'wb') as handle:
        handle.write(page_content)