import yfinance as yf
from utils import check_object, convert_column_names


def get_stock(ticker, start, end):
    try:
        df = yf.download(ticker, start=start, end=end, progress=False)
        df.columns = map(convert_column_names, df.columns)
        df.index.names = ['date']
        check_object(df)
        return df
    except Exception as e:
        print('An error occured while downloading data\n' + str(e))
        return None