code: def distro_check():
      
      distro_data = platform.linux_distribution()
      distro = [d.lower() for d in distro_data if d.isalpha()]
  
      if any(['ubuntu' in distro, 'debian' in distro]) is True:
          return 'apt'
      elif any(['centos' in distro, 'redhat' in distro]) is True:
          return 'yum'
      elif any(['suse' in distro]) is True:
          return 'zypper'
      else:
          raise AssertionError(
              'Distro [ %s ] is unsupported.' % distro
          )
docs: Return a string containing the distro package manager.