Issue 5178: Add tempfile.TemporaryDirectory (original patch by Neil Schemenauer)

Lib/tempfile.py

@@ -19,7 +19,7 @@ This module also provides some data items to the user:
 
 __all__ = [
     "NamedTemporaryFile", "TemporaryFile", # high level safe interfaces
-    "SpooledTemporaryFile",
+    "SpooledTemporaryFile", "TemporaryDirectory",
     "mkstemp", "mkdtemp",                  # low level safe interfaces
     "mktemp",                              # deprecated unsafe interface
     "TMP_MAX", "gettempprefix",            # constants
@@ -613,3 +613,66 @@ class SpooledTemporaryFile:
 
     def xreadlines(self, *args):
         return self._file.xreadlines(*args)
+
+
+class TemporaryDirectory(object):
+    """Create and return a temporary directory.  This has the same
+    behavior as mkdtemp but can be used as a context manager.  For
+    example:
+
+        with TemporaryDirectory() as tmpdir:
+            ...
+
+    Upon exiting the context, the directory and everthing contained
+    in it are removed.
+    """
+
+    def __init__(self, suffix="", prefix=template, dir=None):
+        self.name = mkdtemp(suffix, prefix, dir)
+        self._closed = False
+
+    def __enter__(self):
+        return self.name
+
+    def cleanup(self):
+        if not self._closed:
+            self._rmtree(self.name)
+            self._closed = True
+
+    def __exit__(self, exc, value, tb):
+        self.cleanup()
+
+    __del__ = cleanup
+
+
+    # XXX (ncoghlan): The following code attempts to make
+    # this class tolerant of the module nulling out process
+    # that happens during CPython interpreter shutdown
+    # Alas, it doesn't actually manage it. See issue #10188
+    _listdir = staticmethod(_os.listdir)
+    _path_join = staticmethod(_os.path.join)
+    _isdir = staticmethod(_os.path.isdir)
+    _remove = staticmethod(_os.remove)
+    _rmdir = staticmethod(_os.rmdir)
+    _os_error = _os.error
+
+    def _rmtree(self, path):
+        # Essentially a stripped down version of shutil.rmtree.  We can't
+        # use globals because they may be None'ed out at shutdown.
+        for name in self._listdir(path):
+            fullname = self._path_join(path, name)
+            try:
+                isdir = self._isdir(fullname)
+            except self._os_error:
+                isdir = False
+            if isdir:
+                self._rmtree(fullname)
+            else:
+                try:
+                    self._remove(fullname)
+                except self._os_error:
+                    pass
+        try:
+            self._rmdir(path)
+        except self._os_error:
+            pass