text: def data_wrangling(columns):
  
      from wrangling_scripts.functions.functions import ranking
      import pandas as pd
  
      # Importing Data
  
      df_2019 = pd.read_csv('data/survey_results_public_2019.csv')
  
      # Cleaning Data
  
      df_2019_clean = df_2019.dropna(subset=['DevType'])
      df_2019_clean_DS = df_2019_clean[df_2019_clean['DevType'].str.contains('Data scientist or machine learning specialist')]
  
      # Plotting Data
  
      column_names = columns
      legends=['Used in 2019', 'Desired for 2020']
  
      plot = ranking(df_2019_clean_DS, column_names, legends)
      
      return plot