require 'yaml'
lines = []
temp = []
tsv_file = File.open(ARGV[0], 'r')
tsv_file.each_line { |line| lines << line }
tsv_file.close
keys = lines[0].split("\t")
keys.map!(&:chomp)
lines.shift
lines.each do |line|
  values = line.split("\t")
  students = {}
  keys.each_index { |index| students[keys[index]] = values[index].chomp }
  temp.push(students)
end
if ARGV[1].nil?
  puts temp.to_yaml
else
  File.open(ARGV[1], 'w') do |file|
    file.puts temp.to_yaml
  end
end