Python：使用符号链接复制目录树

Question

在Python中我试图复制一个目录（实际上是它的Jenkins作业目录），但它包含符号链接，当我复制时我得到：

Traceback (most recent call last):
  File "BackupJenkinsJobs.py", line 272, in <module>
    main()
  File "BackupJenkinsJobs.py", line 208, in main
    distutils.dir_util.copy_tree(JenkinsJobSrc, cleanJobsDir, preserve_symlinks=False)
  File "c:\Python27\lib\distutils\dir_util.py", line 163, in copy_tree
    verbose=verbose, dry_run=dry_run))
  File "c:\Python27\lib\distutils\dir_util.py", line 163, in copy_tree
    verbose=verbose, dry_run=dry_run))
  File "c:\Python27\lib\distutils\dir_util.py", line 167, in copy_tree
    dry_run=dry_run)
  File "c:\Python27\lib\distutils\file_util.py", line 148, in copy_file
    _copy_file_contents(src, dst)
  File "c:\Python27\lib\distutils\file_util.py", line 32, in _copy_file_contents
    fsrc = open(src, 'rb')
IOError: [Errno 22] invalid mode ('rb') or filename: 'C:\\Program Files (x86)\\Jenkins\\jobs\\AutoRunTemplate\\builds\\lastFailedBuild'

我使用以下代码：

try:
    distutils.dir_util.copy_tree(JenkinsJobSrc, cleanJobsDir, preserve_symlinks=False)

except distutils.errors.DistutilsFileError as e:
    print("Unable to copy Jenkins jobs. Error: %s".format(e))
    return

如果复制，忽略链接，任何帮助都会受到赞赏，因为preserve_symlinks似乎不起作用。