import logging import plotly.graph_objects as go from bots import imps, load_candle from openbb_terminal.common.technical_analysis import volatility_model from openbb_terminal.decorators import log_start_end logger = logging.getLogger(__name__) # pylint: disable=R0913 @log_start_end(log=logger) def bbands_command( ticker="", interval: int = 15, past_days: int = 0, length="20", n_std: float = 2.0, ma_mode="sma", start="", end="", extended_hours: bool = False, heikin_candles: bool = False, trendline: bool = False, news: bool = False, ): """Displays chart with bollinger bands [Yahoo Finance]""" # Debug if imps.DEBUG: # pylint: disable=logging-too-many-args logger.debug( "ta bbands %s %s %s %s %s %s %s %s %s %s %s %s", ticker, interval, past_days, length, n_std, ma_mode, start, end, extended_hours, heikin_candles, trendline, news, ) # Check for argument possible_ma = [ "dema", "ema", "fwma", "hma", "linreg", "midpoint", "pwma", "rma", "sinwma", "sma", "swma", "t3", "tema", "trima", "vidya", "wma", "zlma", ] if ticker == "": raise Exception("Stock ticker is required") if not length.lstrip("-").isnumeric(): raise Exception("Number has to be an integer") ta_length = int(length) n_std = float(n_std) if ma_mode not in possible_ma: raise Exception("Invalid ma entered") # Retrieve Data df_stock, start, end, bar_start = load_candle.stock_data( ticker=ticker, interval=interval, past_days=past_days, extended_hours=extended_hours, start=start, end=end, heikin_candles=heikin_candles, ) if df_stock.empty: raise Exception("No Data Found") df_ta = df_stock.loc[(df_stock.index >= start) & (df_stock.index < end)] df_ta = df_ta.join( volatility_model.bbands(df_ta["Adj Close"], ta_length, n_std, ma_mode) ) # Output Data if interval != 1440: df_ta = df_ta.loc[(df_ta.index >= bar_start) & (df_ta.index < end)] df_ta = df_ta.fillna(0.0) plot = load_candle.candle_fig( df_ta, ticker, interval, extended_hours, news, trendline=trendline ) title = f"{plot['plt_title']} Bollinger Bands ({ma_mode.upper()})" fig = plot["fig"] idx = 6 if (not trendline) and (interval != 1440) else 11 fig.add_trace( go.Scatter( name=f"BBU_{length}_{n_std}", x=df_ta.index, y=df_ta.iloc[:, (idx + 2)].values, opacity=1, mode="lines", line_color="indigo", ), secondary_y=True, row=1, col=1, ) fig.add_trace( go.Scatter( name=f"BBL_{length}_{n_std}", x=df_ta.index, y=df_ta.iloc[:, idx].values, opacity=1, mode="lines", line_color="indigo", fill="tonexty", fillcolor="rgba(74, 0, 128, 0.2)", ), secondary_y=True, row=1, col=1, ) fig.add_trace( go.Scatter( name=f"BBM_{length}_{n_std}", x=df_ta.index, y=df_ta.iloc[:, (idx + 1)].values, opacity=1, line=dict( width=1.5, dash="dash", ), ), secondary_y=True, row=1, col=1, ) fig.update_layout( margin=dict(l=0, r=0, t=50, b=20), template=imps.PLT_TA_STYLE_TEMPLATE, colorway=imps.PLT_TA_COLORWAY, title=title, title_x=0.1, title_font_size=14, dragmode="pan", ) imagefile = "ta_bbands.png" # Check if interactive settings are enabled plt_link = "" if imps.INTERACTIVE: plt_link = imps.inter_chart(fig, imagefile, callback=False) imagefile = imps.image_border(imagefile, fig=fig) return { "title": f"Stocks: Bollinger-Bands {ticker.upper()}", "description": plt_link, "imagefile": imagefile, }