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Created on 2013-01-14 03:59 by Aaron.Meurer, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (5) | |||
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| msg179917 - (view) | Author: Aaron Meurer (Aaron.Meurer) | Date: 2013-01-14 03:59 | |
The rlcompleter module does not work if __main__ cannot be imported, even though it can be used without it. For example, on the App Engine, __main__ is not usable. If one creates the example app described at https://developers.google.com/appengine/docs/python/gettingstartedpython27/helloworld, and adds "import rlcompleter" to the top of helloworld.py, you get the following error in the AppEngine Traceback (most recent call last): File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/runtime/wsgi.py", line 196, in Handle handler = _config_handle.add_wsgi_middleware(self._LoadHandler()) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/runtime/wsgi.py", line 255, in _LoadHandler handler = __import__(path[0]) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1766, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1630, in FindAndLoadModule description) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1577, in LoadModuleRestricted description) File "/Users/aaronmeurer/Desktop/helloworld/helloworld.py", line 2, in <module> import rlcompleter File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1766, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1630, in FindAndLoadModule description) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1577, in LoadModuleRestricted description) File "/sw/lib/python2.7/rlcompleter.py", line 43, in <module> import __main__ File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1766, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1630, in FindAndLoadModule description) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 692, in Decorate return func(self, *args, **kwargs) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/dev_appserver_import_hook.py", line 1577, in LoadModuleRestricted description) ImportError: Cannot re-init internal module __main__ Now, I don't really understand what the issue is here. I don't really get how __main__ is supposed to work, whether this is something that might be expected to happen in an environment that isn't highly modded like the App Engine's. Probably this should at least be considered an App Engine bug. My point is that it's possible to use the rlcompleter module completely without __main__, if one passes the optional argument to Completer. My suggestion is to catch ImportError when importing __main__, and if it isn't importable, make the argument to Completer required. It should be a minimal code change. |
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| msg179918 - (view) | Author: Aaron Meurer (Aaron.Meurer) | Date: 2013-01-14 04:07 | |
For completion, here's the corresponding App Engine issue I opened: http://code.google.com/p/googleappengine/issues/detail?id=8665. |
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| msg396108 - (view) | Author: Irit Katriel (iritkatriel) *  |
Date: 2021-06-18 23:21 | |
Your traceback indicates you had this problem on Python 2.7. Are you still seeing it on a current version? |
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| msg396112 - (view) | Author: Aaron Meurer (asmeurer) | Date: 2021-06-19 00:41 | |
A quick glance at the source shows that it still imports __main__ at the top-level. I have no idea how legitimate it is that the App Engine (used to?) makes it so that __main__ can't be imported. |
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| msg396140 - (view) | Author: Irit Katriel (iritkatriel) * |
Date: 2021-06-19 16:53 | |
Since this is not currently a problem for you, and nobody else reported it since 2013, I’ll close the issue and if anyone runs into it again we can investigate on current python/app engine versions. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:40 | admin | set | github: 61163 |
| 2021-06-19 16:53:30 | iritkatriel | set | status: open -> closed resolution: third party messages: + msg396140 stage: resolved |
| 2021-06-19 00:41:55 | asmeurer | set | nosy:
+ asmeurer messages: + msg396112 |
| 2021-06-18 23:21:23 | iritkatriel | set | nosy:
+ iritkatriel messages: + msg396108 |
| 2013-01-14 04:07:14 | Aaron.Meurer | set | messages: + msg179918 |
| 2013-01-14 03:59:03 | Aaron.Meurer | create | |