import ctypes
import errno
+# support basestring in python3
+try:
+ unicode = unicode
+except NameError:
+ # 'unicode' is undefined, must be Python 3
+ str = str
+ unicode = str
+ bytes = bytes
+ basestring = (str,bytes)
+else:
+ # 'unicode' exists, must be Python 2
+ str = str
+ unicode = unicode
+ bytes = str
+ basestring = basestring
+
try:
from subprocess import CalledProcessError
except ImportError: