anchor.diff:  if not defined PYTHON_ROOT set PYTHON_ROOT=C:\Python37
   if not defined BUILD_DIR set BUILD_DIR=build
   set task_name=%1
  +set UPLOAD_TP_FILE=OFF
   
   rem ------initialize the python environment------
   set PYTHON_EXECUTABLE=%PYTHON_ROOT%\python.exe
  
positive.code: )
  set THIRD_PARTY_HOME=%cache_dir:\=/%/third_party/%sub_dir%
  set THIRD_PARTY_PATH=%THIRD_PARTY_HOME%/%md5%
  set UPLOAD_TP_FILE=OFF
  
  if not exist %THIRD_PARTY_PATH% (
      echo There is no usable third_party cache in %THIRD_PARTY_PATH%, will download from bos.
  
negative.code:     )
  )
  
  if "%UPLOAD_TP_FILE%"=="ON" (
      set BCE_FILE=%cache_dir%\bce-python-sdk-0.8.33\BosClient.py
      echo Uploading third_party: checking bce ...
      if not exist %cache_dir%\bce-python-sdk-0.8.33 (
          echo There is no bce in this PC, will install bce.
  