title: python use plotly to plot time series without date gaps
body: <p>I am using python3. I have a price quote series of 1 minute frequency. The quote is only available in trading hours. I tried to plot it using plotly, but there are gaps in non trading hours and weekends. How can I make this plot consecutive?</p>
  
  <p>My code is like</p>
  
  <pre><code>ifBasisPlot=go.Scatter( x=ifBasis.date, y=ifBasis.basis, line=go.Line(width=1,color='blue'), name='basis' )
  
  data = go.Data([ifBasisPlot])
  
  ifBasisPlot_url = py.plot(data, filename='ifBasisPlot', auto_open=False,)
  </code></pre>
  
  <p>the plot and the data is here: <a href="https://plot.ly/~shuaihou96/14/if/" rel="noreferrer">https://plot.ly/~shuaihou96/14/if/</a></p>