Add mkdir -p functionality using a try loop and file exists exception (mkdir_p)

Author: blakedewey

nipype/utils/filemanip.py

@@ -13,6 +13,7 @@
 import os
 import re
 import shutil
+import errno
 
 import numpy as np
 
@@ -430,3 +431,13 @@ def write_rst_dict(info, prefix=''):
     for key, value in sorted(info.items()):
         out.append(prefix + '* ' + key + ' : ' + str(value))
     return '\n'.join(out)+'\n\n'
+
+
+def mkdir_p(path):
+    try:
+        os.makedirs(path)
+    except OSError as exc:
+        if exc.errno == errno.EEXIST and os.path.isdir(path):
+            pass
+        else:
+            raise