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-rw-r--r--Doc/library/os.rst19
1 files changed, 11 insertions, 8 deletions
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 5f149cb..bf6087e 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1555,18 +1555,21 @@ features:
single: UNC paths; and os.makedirs()
Recursive directory creation function. Like :func:`mkdir`, but makes all
- intermediate-level directories needed to contain the leaf directory. If
- the target directory with the same mode as specified already exists,
- raises an :exc:`OSError` exception if *exist_ok* is False, otherwise no
- exception is raised. If the directory cannot be created in other cases,
- raises an :exc:`OSError` exception. The default *mode* is ``0o777`` (octal).
- On some systems, *mode* is ignored. Where it is used, the current umask
- value is first masked out.
+ intermediate-level directories needed to contain the leaf directory.
+
+ The default *mode* is ``0o777`` (octal). On some systems, *mode* is
+ ignored. Where it is used, the current umask value is first masked out.
+
+ If *exists_ok* is ``False`` (the default), an :exc:`OSError` is raised if
+ the target directory already exists. If *exists_ok* is ``True`` an
+ :exc:`OSError` is still raised if the umask-masked *mode* is different from
+ the existing mode, on systems where the mode is used. :exc:`OSError` will
+ also be raised if the directory creation fails.
.. note::
:func:`makedirs` will become confused if the path elements to create
- include :data:`pardir`.
+ include :data:`pardir` (eg. ".." on UNIX systems).
This function handles UNC paths correctly.