title: save my offline plotly plot as html file locally
body: <p>In my jupyter notebook, I made an offline interactive plot with plotly. I'm trying to save this interactive plot as a html file locally. </p>
  
  <p>Below is my code. However, I cannot find my file I intended to save anywhere. Does anyone know what I did wrong?
  Thanks a lot. </p>
  
  <pre><code>py.offline.init_notebook_mode(connected=True)
  import plotly as py
  import plotly.graph_objs as go
  import numpy as np
  
  y = np.random.randn(500)
  data = [go.Histogram(y=y)]
  
  py.offline.iplot(data, filename='myplot.html')
  </code></pre>