code: #!/usr/bin/env python3
  import pandas as pd
  import sys
  
  input_file = sys.argv[1]
  output_file = sys.argv[2]
  
  data_frame = pd.read_csv(input_file)
  
  data_frame['Cost'] = data_frame['Cost'].str.strip('$').astype(float)
  data_frame_value_meets_condition = data_frame.loc[(data_frame['Supplier Name']\
  .str.contains('Z')) | (data_frame['Cost'] > 600.0), :]
  
  data_frame_value_meets_condition.to_csv(output_file, index=False)
apis: pandas.read_csv