Create a new folder

>>> import os
>>> os.mkdir(r)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'r' is not defined
>>> out=name
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'name' is not defined
>>> out='name'
>>> os.mkdir(out)
>>> os.mkdir(out)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
FileExistsError: [Errno 17] File exists: 'name'
>>>