title: Matplotlib - AttributeError: Unknown property maker
body: <p>My code:</p>
  
  <pre><code>from matplotlib import pyplot as plt
  years = [1950, 1960, 1970, 1980, 1990, 2000, 2010]
  gdp =  [300.2, 543.3, 1075.9, 286.5, 5979.6, 10289.7, 14958.3]
  plt.plot(years, gdp, color= 'green', maker='o', linestyle= 'solid')
  plt.title("Nominal GDP")
  plt.ylabel("Billions of $")
  plt.show()
  </code></pre>
  
  <p>I am running this program in Python 3.6.2 but I am getting all sort of error. Below is the error I am getting </p>
  
  <blockquote>
    <p>Traceback (most recent call last):</p>
    
    <p>File "C:\Python Programs\Python 3.4\test1.py", line 6, in 
        plt.plot(years, gdp, color= 'green', maker='o', linestyle= 'solid')</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\pyplot.py", line 3317, in plot
        ret = ax.plot(*args, **kwargs)</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib__init__.py", line 1898, in inner
        return func(ax, *args, **kwargs)</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\axes_axes.py", line 1406, in plot
        for line in self._get_lines(*args, **kwargs):</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\axes_base.py", line 407, in _grab_next_args
        for seg in self._plot_args(remaining, kwargs):</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\axes_base.py", line 395, in _plot_args
        seg = func(x[:, j % ncx], y[:, j % ncy], kw, kwargs)</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\axes_base.py", line 302, in _makeline
        seg = mlines.Line2D(x, y, **kw)</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\lines.py", line 431, in <strong>init</strong>
        self.update(kwargs)</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\artist.py", line 885, in update
        for k, v in props.items()]</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\artist.py", line 885, in 
        for k, v in props.items()]</p>
    
    <p>File "C:\Program Files (x86)\Python36-32\lib\site-packages\matplotlib\artist.py", line 878, in _update_property
        raise AttributeError('Unknown property %s' % k)</p>
    
    <p>AttributeError: Unknown property maker</p>
  </blockquote>
  
  <p>Can someone please help?</p>