new_contents: import pandas as pd
  import numpy as np
  import plotly.plotly as py
  import plotly.graph_objs as go
  
  
  # Import data from csv
  df = pd.read_csv('test.csv')
  df.head()
  
  trace1 = go.Scatter(x=df['x'], y=df['a'],mode='lines', name='a')
  
  
  layout = go.Layout(title='Simple Plot from csv data',
                     plot_bgcolor='rgb(230, 230,230)')
  
  fig = go.Figure(data=[trace1], layout=layout)
  
  # Plot data in the notebook
  py.iplot(fig, filename='simple-plot-from-csv')
  
subject: Create plotter.py