input: Write a function to compute the average salary of people from a given CSV file containing names and salaries. If the file is empty, return 0 as the average salary. 
  
  def get_average_salary(filename):
    total = 0
    count = 0
  
    if filename == "":
      return 0
  
    with open(filename, 'r') as csvfile:
      csvreader = csv.reader(csvfile)
      next(csvreader) # skip header
      
      # loop through the CSV rows
      for row in csvreader:
        total += int(row[1])
        count += 1
    
    if count == 0:
      return 0
  
    return total/count
    
  assert get_average_salary('salary.csv') == 2000.0
  assert get_average_salary('empty_salary.csv') == 0
output: 
  def get_average_salary(filename):
    total = 0
    count = 0
  
    if filename == "":
      return 0
  
    try:
      with open(filename, 'r') as csvfile:
        csvreader = csv.reader(csvfile)
        next(csvreader) # skip header
        
        # loop through the CSV rows
        for row in csvreader:
          total += int(row[1])
          count += 1
    except FileNotFoundError:
      return 0
    
    if count == 0:
      return 0
  
    return total/count
  