input: Write a function to generate an HTML page containing a table with the provided employee data. The function should take a list of dictionaries where each dictionary contains the employee data (name, job title, department, and salary) and return a string representing the HTML page.
  assert generate_employee_table([
      {"Name": "John Doe", "Job Title": "Senior Developer", "Department": "IT", "Salary": "$120,000"},
      {"Name": "Jane Doe", "Job Title": "Manager", "Department": "Finance", "Salary": "$95,000"},
      {"Name": "Tim Smith", "Job Title": "Junior Developer", "Department": "IT", "Salary": "$55,000"}
  ]) == "<html>\n  <head>\n    <title>Employee Data</title>\n  </head>\n  <body>\n    <table>\n      <thead>\n        <tr>\n          <th>Name</th>\n          <th>Job Title</th>\n          <th>Department</th>\n          <th>Salary</th>\n        </tr>\n      </thead>\n      <tbody>\n        <tr>\n          <td>John Doe</td>\n          <td>Senior Developer</td>\n          <td>IT</td>\n          <td>$120,000</td>\n        </tr>\n        <tr>\n          <td>Jane Doe</td>\n          <td>Manager</td>\n          <td>Finance</td>\n          <td>$95,000</td>\n        </tr>\n        <tr>\n          <td>Tim Smith</td>\n          <td>Junior Developer</td>\n          <td>IT</td>\n          <td>$55,000</td>\n        </tr>\n      </tbody>\n    </table>\n  </body>\n</html>"
output: def generate_employee_table(employees):
      html = "<html>\n  <head>\n    <title>Employee Data</title>\n  </head>\n  <body>\n    <table>\n      <thead>\n        <tr>\n          <th>Name</th>\n          <th>Job Title</th>\n          <th>Department</th>\n          <th>Salary</th>\n        </tr>\n      </thead>\n      <tbody>"
      for employee in employees:
          html += f"\n        <tr>\n          <td>{employee['Name']}</td>\n          <td>{employee['Job Title']}</td>\n          <td>{employee['Department']}</td>\n          <td>{employee['Salary']}</td>\n        </tr>"
      html += "\n      </tbody>\n    </table>\n  </body>\n</html>"
      return html