try:
from inspect import signature
except ImportError:
try:
from funcsigs import signature
except ImportError:
signature = None
from shutil import copytree
if 'dirs_exist_ok' not in signature(copytree).parameters:
from backports.shutil_copytree import copytree- symlink stat is not copied when Python<3.3
- directory junctions check on Windows Python<3.8 is done via pywin32, which is less-tested.
