s4cmd.py
def tempfile_set(tempfile, target):
  '''Atomically rename and clean tempfile'''
  if target:
    os.rename(tempfile, target)
  else:
    os.unlink(tempfile)

  if target in TEMP_FILES:
    TEMP_FILES.remove(tempfile)
def tempfile_set(tempfile, target):
  '''Atomically rename and clean tempfile'''
  if target:
    os.rename(tempfile, target)
  else:
    os.unlink(tempfile)

  if target in TEMP_FILES:
    TEMP_FILES.remove(tempfile)
Atomically rename and clean tempfile