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.venv/Lib/site-packages/jupyter_core/utils/__init__.py

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+import errno
+import os
+
+
+def ensure_dir_exists(path, mode=0o777):
+    """ensure that a directory exists
+    If it doesn't exist, try to create it, protecting against a race condition
+    if another process is doing the same.
+    The default permissions are determined by the current umask.
+    """
+    try:
+        os.makedirs(path, mode=mode)
+    except OSError as e:
+        if e.errno != errno.EEXIST:
+            raise
+    if not os.path.isdir(path):
+        raise OSError("%r exists but is not a directory" % path)