csv_reader.py

import csv


def read_csv(filename):
	"""Read and output the datails of CSV file."""
	try:
		with open(filename, newline='') as csv_file:
			csv_reader = csv.DictReader(csv_file)
			for record in csv_reader:
				print(record)

	except (IOError, OSError) as file_read_error:
		print(f"Unable to open the csv file. Exception: {file_read_error}")

if __name__ == '__main__':
	read_csv('market_cap.csv')