text: import click
  
  from bitcash.keygen import generate_matching_address
  
  
  @click.group(invoke_without_command=True)
  def bitcash():
      pass
  
  
  @bitcash.command()
  @click.argument("prefix")
  @click.option("--cores", "-c", default="all")
  def gen(prefix, cores):
      click.echo(generate_matching_address(prefix, cores))
  