class_docstr: A data class to store a list of HostInfo objects.
class_docstr_tok: ["A","data","class","to","store","a","list","of","HostInfo","objects","."]
docstr: Return the HostInfo object which matches with the hostname.
  
  Args:
      hostname (str): the name of the host
  
  Returns:
      hostinfo (HostInfo): the HostInfo object which matches with the hostname
docstr_tok: ["Return","the","HostInfo","object","which","matches","with","the","hostname",".","Args",":","hostname","(","str",")",":","the","name","of","the","host","Returns",":","hostinfo","(","HostInfo",")",":","the","HostInfo","object","which","matches","with","the","hostname"]
code: def get_hostinfo(self, hostname: str) -> HostInfo:
      """
      Return the HostInfo object which matches with the hostname.
  
      Args:
          hostname (str): the name of the host
  
      Returns:
          hostinfo (HostInfo): the HostInfo object which matches with the hostname
      """
  
      for hostinfo in self.hostinfo_list:
          if hostinfo.hostname == hostname:
              return hostinfo
  
      raise Exception(f"Hostname {hostname} is not found")
  
file_path: ColossalAI/colossalai/cli/launcher/hostinfo.py
imports: import socket
label_desc: Use image node_id 4 for calling the HostInfoList obj's underlying member method code with example usage: obj.get_hostinfo(hostname) and returns: hostinfo