text: import csv
  import collections
  
  '''
  Script is used to check for duplicates in companylist_full.csv
  '''
  
  with open ('companylist_full.csv', newline='') as csvfile:
  	symbol_list = []
  	spamreader = csv.reader(csvfile, delimiter=',', quotechar='|')
  	for row in spamreader:
  		symbol = row[0]
  		symbol_list.append(symbol)
  	print ([item for item, count in collections.Counter(symbol_list).items() if count > 1])