text: import os
  from datetime import datetime, timedelta
  import discord
  from matplotlib import pyplot as plt
  
  from gamestonk_terminal.helper_funcs import plot_autoscale
  from gamestonk_terminal.common.technical_analysis import volatility_model
  from gamestonk_terminal.config_plot import PLOT_DPI
  
  import discordbot.config_discordbot as cfg
  from discordbot.run_discordbot import gst_imgur
  import discordbot.helpers
  
  
  async def donchian_command(
      ctx, ticker="", upper_length="25", lower_length="100", start="", end=""
  ):
      """Displays chart with donchian channel [Yahoo Finance]"""
  
      try:
  
          # Debug
          if cfg.DEBUG:
              print(
                  f"!stocks.ta.donchian {ticker} {upper_length} {lower_length} {start} {end}"
              )
  
          # Check for argument
          if ticker == "":
              raise Exception("Stock ticker is required")
  
          if start == "":
              start = datetime.now() - timedelta(days=365)
          else:
              start = datetime.strptime(start, cfg.DATE_FORMAT)
  
          if end == "":
              end = datetime.now()
          else:
              end = datetime.strptime(end, cfg.DATE_FORMAT)
  
          if not upper_length.lstrip("-").isnumeric():
              raise Exception("Number has to be an integer")
          upper_length = float(upper_length)
          if not lower_length.lstrip("-").isnumeric():
              raise Exception("Number has to be an integer")
          lower_length = float(lower_length)
  
          ticker = ticker.upper()
          df_stock = discordbot.helpers.load(ticker, start)
          if df_stock.empty:
              raise Exception("Stock ticker is invalid")
  
          # Retrieve Data
          df_stock = df_stock.loc[(df_stock.index >= start) & (df_stock.index < end)]
  
          df_ta = volatility_model.donchian(df_stock, upper_length, lower_length)
  
          # Output Data
          fig, ax = plt.subplots(figsize=plot_autoscale(), dpi=PLOT_DPI)
          ax.plot(df_stock.index, df_stock["Adj Close"].values, color="k", lw=3)
          ax.plot(df_ta.index, df_ta.iloc[:, 0].values, "b", lw=1.5, label="upper")
          ax.plot(df_ta.index, df_ta.iloc[:, 1].values, "b", lw=1.5, ls="--")
          ax.plot(df_ta.index, df_ta.iloc[:, 2].values, "b", lw=1.5, label="lower")
          ax.set_title(f"{ticker} donchian")
          ax.set_xlim(df_stock.index[0], df_stock.index[-1])
          ax.set_xlabel("Time")
          ax.set_ylabel("Price ($)")
  
          ax.legend([ticker, df_ta.columns[0], df_ta.columns[1], df_ta.columns[2]])
          ax.fill_between(
              df_ta.index,
              df_ta.iloc[:, 0].values,
              df_ta.iloc[:, 2].values,
              alpha=0.1,
              color="b",
          )
          ax.grid(b=True, which="major", color="#666666", linestyle="-")
  
          plt.gcf().autofmt_xdate()
          fig.tight_layout(pad=1)
  
          plt.legend()
  
          plt.savefig("ta_donchian.png")
          uploaded_image = gst_imgur.upload_image("ta_donchian.png", title="something")
          image_link = uploaded_image.link
          if cfg.DEBUG:
              print(f"Image URL: {image_link}")
          title = "Stocks: Donchian-Channels " + ticker
          embed = discord.Embed(title=title, colour=cfg.COLOR)
          embed.set_author(
              name=cfg.AUTHOR_NAME,
              icon_url=cfg.AUTHOR_ICON_URL,
          )
          embed.set_image(url=image_link)
          os.remove("ta_donchian.png")
  
          await ctx.send(embed=embed)
  
      except Exception as e:
          embed = discord.Embed(
              title="ERROR Stocks: Donchian-Channels",
              colour=cfg.COLOR,
              description=e,
          )
          embed.set_author(
              name=cfg.AUTHOR_NAME,
              icon_url=cfg.AUTHOR_ICON_URL,
          )
  
          await ctx.send(embed=embed)
  