Added forgotten utils module

slack_backup/utils.py

@@ -0,0 +1,21 @@
+"""
+Some utils functions. Jsut to not copypaste the code around
+"""
+import errno
+import os
+import logging
+
+
+def makedirs(path):
+    """Create if not exists - version of os.makedirs."""
+    try:
+        os.makedirs(path)
+    except OSError as err:
+        if err.errno != errno.EEXIST:
+            logging.error("Cannot create `%s'.", path)
+            raise
+        else:
+            if os.path.exists(path) and not os.path.isdir(path):
+                logging.error("Cannot create `%s'. There is some file on the "
+                              "way; cannot proceed.", path)
+                raise