input: from typing import List, Dict
  
  def print_customer_data(customers: Dict[str, str], name: str) -> None:
      """
      Searches for a customer by name in the provided dictionary and prints the customer's details if found.
      If the customer is not found, prints "Customer not found.".
      >>> print_customer_data({'John Doe': '123 Main St', 'Jane Smith': '456 Elm St'}, 'John Doe')
      Customer: John Doe, Address: 123 Main St
      >>> print_customer_data({'John Doe': '123 Main St'}, 'Jane Smith')
      Customer not found.
      """
      if name in customers:
          print(f"Customer: {name}, Address: {customers[name]}")
      else:
          print("Customer not found.")
output:     if name in customers:
          print(f"Customer: {name}, Address: {customers[name]}")
      else:
          print("Customer not found.")