[Python-checkins] cpython: Issue #19946: Raise ImportError when the main module cannot be found

[brett.cannon]

http://hg.python.org/cpython/rev/cea42629ddf5
changeset:   87937:cea42629ddf5
user:        Brett Cannon <brett at python.org>
date:        Fri Dec 13 11:43:10 2013 -0500
summary:
  Issue #19946: Raise ImportError when the main module cannot be found
by multiprocessing.spawn (before it was raising an AttributeError).

files:
  Lib/multiprocessing/spawn.py |  2 ++
  Misc/NEWS                    |  3 +++
  2 files changed, 5 insertions(+), 0 deletions(-)


diff --git a/Lib/multiprocessing/spawn.py b/Lib/multiprocessing/spawn.py
--- a/Lib/multiprocessing/spawn.py
+++ b/Lib/multiprocessing/spawn.py
@@ -248,6 +248,8 @@
         main_module = types.ModuleType(main_name)
         # XXX Use a target of main_module?
         spec = importlib.find_spec(main_name, path=dirs)
+        if spec is None:
+            raise ImportError(name=main_name)
         methods = importlib._bootstrap._SpecMethods(spec)
         methods.init_module_attrs(main_module)
         main_module.__name__ = '__mp_main__'
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -44,6 +44,9 @@
 Library
 -------
 
+- Issue #19946: multiprocessing.spawn now raises ImportError when the module to
+  be used as the main module cannot be imported.
+
 - Issue #17919: select.poll.poll() again works with poll.POLLNVAL on AIX.
 
 - Issue #19063: if a Charset's body_encoding was set to None, the email

-- 
Repository URL: http://hg.python.org/cpython