Message9571

os.makedirs() fails with Errno 17 [File exists] when trying to execute on a UNC path ("\\\\deploy\\1.9.83-20150202083042\\docs\\doctrees\\subfolder").
List of code is below

================================================
dirname = "\\\\deploy\\1.9.83-20150202083042\\docs\\doctrees\\subfolder"
if not path.isdir(dirname):
    os.makedirs(dirname)
=================================================
During execution os.makedirs(dirname) Errno 17 [File exists] occured.
I have checked manually folder "subfolder" is not exist before and after execution the program.
Could you help me resolve this problem?