input: from typing import List
  
  def print_customer_data(name: str) -> None:
      """ Searches customer data by customer name and prints results.
      >>> print_customer_data("John Doe")
      Customer: John Doe, Age: 30, Address: 123 Main St
      >>> print_customer_data("Jane Smith")
      Customer: Jane Smith, Age: 25, Address: 456 Elm St
      """
      # Code for searching customer data by customer name and printing results
      ...
  
  # Main function for the customer search application
  if __name__=="__main__":
      # Get command line arguments
      args = sys.argv
      
      if len(args) == 2:
          name = args[1]
          print_customer_data(name)
      else:
          print("Invalid arguments, please specify a customer name.")
output:     customer_data = {
          "John Doe": {"age": 30, "address": "123 Main St"},
          "Jane Smith": {"age": 25, "address": "456 Elm St"}
      }
      
      if name in customer_data:
          data = customer_data[name]
          print(f"Customer: {name}, Age: {data['age']}, Address: {data['address']}")
      else:
          print(f"Customer {name} not found.")