input: Write a function to create a Python dictionary that stores data about a student. The dictionary should include keys like 'name', 'year', 'gpa', 'courses', and 'extracurricular'. The function should return the dictionary.
  assert create_student_data('John Smith', 'Freshman', 3.25, ['math', 'english', 'Computer Science', 'Statistics'], ['Chess Club', 'Student Government', 'Debate Team'])=={'name': 'John Smith', 'year': 'Freshman', 'gpa': 3.25, 'courses': ['math', 'english', 'Computer Science', 'Statistics'], 'extracurricular': ['Chess Club', 'Student Government', 'Debate Team']}
  assert create_student_data('Alice Johnson', 'Sophomore', 3.75, ['physics', 'history', 'Chemistry'], ['Art Club', 'Science Olympiad'])=={'name': 'Alice Johnson', 'year': 'Sophomore', 'gpa': 3.75, 'courses': ['physics', 'history', 'Chemistry'], 'extracurricular': ['Art Club', 'Science Olympiad']}
  assert create_student_data('Bob Brown', 'Junior', 3.9, ['biology', 'geography', 'Environmental Science'], [])=={'name': 'Bob Brown', 'year': 'Junior', 'gpa': 3.9, 'courses': ['biology', 'geography', 'Environmental Science'], 'extracurricular': []}
output: def create_student_data(name, year, gpa, courses, extracurricular):
      return {'name': name, 'year': year, 'gpa': gpa, 'courses': courses, 'extracurricular': extracurricular}