input: def get_average_salary(filename: str) -> float:
      """Calculate the average salary from a given CSV file, skipping the header row.
      >>> get_average_salary('salary.csv')
      2000.0
      """
output:     import csv
      total_salary = 0
      count = 0
      with open(filename, newline='') as csvfile:
          reader = csv.reader(csvfile)
          next(reader)  # Skip the header row
          for row in reader:
              total_salary += float(row[1])
              count += 1
      return total_salary / count if count > 0 else 0.0