input: from typing import List, Dict
  
  def print_customer_data(customers: Dict[str, dict], name: str) -> None:
      """ Searches for a customer by name in the provided dictionary of customers and prints the customer data if found.
      If the customer is not found, it prints "Customer not found."
      >>> print_customer_data({"John Doe": {"age": 30, "address": "123 Main St"}, "Jane Smith": {"age": 25, "address": "456 Elm St"}}, "Jane Smith")
      Customer data: {'age': 25, 'address': '456 Elm St'}
      >>> print_customer_data({"John Doe": {"age": 30, "address": "123 Main St"}, "Jane Smith": {"age": 25, "address": "456 Elm St"}}, "James Brown")
      Customer not found.
      """
      if name in customers:
          print(f"Customer data: {customers[name]}")
      else:
          print("Customer not found.")
output:     if name in customers:
          print(f"Customer data: {customers[name]}")
      else:
          print("Customer not found.")