code: def __init__(self):
      self.opref = None
      self.cmd_args = []
      self.cmd_env = {}
      self.private_env = []
      self.sourcecode_paths = []
      self.run_dir = None
      self.run_attrs = {}
      self.deps = []
      self.callbacks = None
  
imports: import logging
  import os
  import subprocess
  import time
  from guild import config
  from guild import exit_code
  from guild import log
  from guild import op_dep
  from guild import op_util
  from guild import run
  from guild import util
label_desc: Use image node_id 1 to create a new Operation object  with example: obj = Operation()