config.py 文件源码

def cfg_from_list(cfg_list):
  """Set config keys via list (e.g., from command line)."""
  from ast import literal_eval
  assert len(cfg_list) % 2 == 0
  for k, v in zip(cfg_list[0::2], cfg_list[1::2]):
    key_list = k.split('.')
    d = __C
    for subkey in key_list[:-1]:
      assert subkey in d
      d = d[subkey]
    subkey = key_list[-1]
    assert subkey in d
    try:
      value = literal_eval(v)
    except:
      # handle the case when v is a string literal
      value = v
    assert type(value) == type(d[subkey]), \
      'type {} does not match original type {}'.format(
        type(value), type(d[subkey]))
    d[subkey] = value