content: from __future__ import division
  import numpy as np
  import matplotlib as mpl
  import matplotlib.pyplot as plt
  
  
  def palplot(pal, size=1):
      """Plot the values in a color palette as a horizontal array.
  
      Parameters
      ----------
      pal : sequence of matplotlib colors
          colors, i.e. as returned by seaborn.color_palette()
      size :
          scaling factor for size of plot
  
      """
      n = len(pal)
      f, ax = plt.subplots(1, 1, figsize=(n * size, size))
      ax.imshow(np.arange(n).reshape(1, n),
                cmap=mpl.colors.ListedColormap(list(pal)),
                interpolation="nearest", aspect="auto")
      ax.set_xticks(np.arange(n) - .5)
      ax.set_yticks([-.5, .5])
      ax.set_xticklabels([])
      ax.set_yticklabels([])
  
  
  def puppyplot(grown_up=False):
      """Plot today's daily puppy. Only works in the IPython notebook."""
      from .external.six.moves.urllib.request import urlopen
      from IPython.display import HTML
      try:
          from bs4 import BeautifulSoup
          url = "http://www.dailypuppy.com"
          if grown_up:
              url += "/dogs"
          html_doc = urlopen(url)
          soup = BeautifulSoup(html_doc)
          puppy = soup.find("div", {"class": "daily_puppy"})
          return HTML(str(puppy.img))
      except ImportError:
          html = ('<img  src="http://cdn-www.dailypuppy.com/dog-images/'
                  'decker-the-nova-scotia-duck-tolling-retriever_'
                  '72926_2013-11-04_w450.jpg" style="width:450px;"/>')
          return HTML(html)
  