title: How to subplot pie chart in plotly?
body: <p>How can I subplot 'pie1' in 'fig', so it be located at 'the first' position. this is how I am doing it but it doesn't work out </p>
  
  <pre><code>    import pandas as pd
      import numpy as np
      import seaborn as sns
      import plotly.offline as pyp
      import plotly.graph_objs as go
      from plotly import tools
      import plotly.plotly as py
      from plotly.offline import iplot,init_notebook_mode
      from IPython.core.display import HTML
      import plotly.io
  
      df1=pd.read_excel('file.xlsx',sheet_name='sheet1',index=False)
      con_pivot=pd.pivot_table(con,index='Category',values=('Payment'),aggfunc='sum',margins=True,margins_name='Total')
  
      fig = tools.make_subplots(rows=2, cols=2, subplot_titles=('The first','3','2','4'))
  
      pie1=go.Pie(labels=con_pivot.index,values=con_pivot.values)
      fig.append_trace(pie1,1,1)
      pyo.plot(fig)
  </code></pre>
  
  <p>Any help help will be appreciated.
  Thank you</p>