input: Write a python function to count total attendees from a CSV file.
  assert count_total_attendees('attendance.csv') == 50  # assuming the file has 50 rows
  assert count_total_attendees('empty.csv') == 0  # assuming the file is empty
  assert count_total_attendees('one_attendee.csv') == 1  # assuming the file has 1 row
output: def count_total_attendees(file_path):
      import csv
      with open(file_path, mode='r') as file:
          reader = csv.reader(file)
          return sum(1 for row in reader)