[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Barry A. Warsaw]

Change by Barry A. Warsaw :


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Larry Hastings]

Larry Hastings  added the comment:


New changeset 891c91d8d38848377a9f475242507510873eb9c3 by larryhastings (Nick 
Coghlan) in branch '3.5':
[3.5] bpo-32551: Consistently configure sys.path[0] (#5197)
https://github.com/python/cpython/commit/891c91d8d38848377a9f475242507510873eb9c3


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan  added the comment:

Tweaking metadata to make it clear Py3.5 was also updated.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Change by Nick Coghlan :


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Donald Stufft]

Changes by Donald Stufft :


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan added the comment:


New changeset d2977a3ae2cc6802921b1e3b6e9d13fcfbda872d by Nick Coghlan in 
branch 'master':
bpo-29723: Consistently configure sys.path[0] (#575)
https://github.com/python/cpython/commit/d2977a3ae2cc6802921b1e3b6e9d13fcfbda872d


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan added the comment:


New changeset c60948464fb0ec116ea227f6bce8a4bb8fb75257 by Nick Coghlan in 
branch '3.6':
[3.6] bpo-29723: Consistently configure sys.path[0] (#636)
https://github.com/python/cpython/commit/c60948464fb0ec116ea227f6bce8a4bb8fb75257


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Ned Deily]

Ned Deily added the comment:


New changeset 75345c552d0889f4f63039d6063f371846c8f41f by Ned Deily (Nick 
Coghlan) in branch '3.6':
[3.6] bpo-29723: Consistently configure sys.path[0] (#636)
https://github.com/python/cpython/commit/75345c552d0889f4f63039d6063f371846c8f41f


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan added the comment:

With the fix for issue 29723 merged, this should be properly resolved now (and 
the fix available with 3.6.1).

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stage: needs patch -> resolved
status: open -> closed

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Changes by Nick Coghlan :


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

Thanks for that Steve. I had a recollection that there's a way of referencing 
the PR itself as a branch within the main repo (I guess it must *be* a branch, 
as how otherwise would github be able to do things like get Travis to build 
it?) but I don't recall the details.

Hmm, a bit of googling later I found 
https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch origin pull/ID/head:BRANCHNAME

And indeed that works - I checked out Nick's patch like that. I'd still need to 
merge it into the 3.6 branch, which is another set of git commands I don't yet 
know (cherry-pick, maybe?)

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

That will work fine. Thanks for checking

The process for pulling someone's PR into your own repo is roughly branch then 
pull from the repo sending the PR. Github should show instructions for this 
under m hidden behind a "merge manually" button (though you want to skip the 
final push that would complete the merge, obviously).

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

OK, cool, thanks. I was sort of hoping for a way to just pull&merge direct from 
the PR (patches on Windows tend to be fiddly due to EOL issues), but I can go 
with old-style :-)

Yes, with that patch applied it still works fine (I copied python3.dll and 
python36.dll from the build into the existing embedded distribution, which I 
guess is all I needed to do - I don't know how to build a full embedded 
distribution file, but I can't see that would make any difference).

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan added the comment:

If you append ".patch" to a GitHub PR URL, it will give you a patch file that 
can be applied to any branch with "git apply".

In this case, the rendered patch is at 
https://patch-diff.githubusercontent.com/raw/python/cpython/pull/575.patch

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

Nick (or Steve) can you explain how I'd do that?

I have a git checkout of the 3.6 branch that I can build. But, how do I merge 
in the changes from https://github.com/python/cpython/pull/575? The PR seems to 
be against master, so I'm not sure how to apply it to another branch (I'm not 
even sure how to apply it to my copy of master, TBH!) Whatever I do need to do 
doesn't seem to be in the devguide, although I may be missing it. Maybe there 
should be a section in there on how to do common tasks like this?

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan added the comment:

Issue 29723 is a follow up issue to this one, where these changes revealed some 
latent defects in how sys.path[0] was being initialised in general for 
directory and zipfile execution (those defects mean the change committed here 
adds an extra directory to sys.path when *not* running in isolated mode).

Paul, are you in a position to rebuild 3.6 with the changes from 
https://github.com/python/cpython/pull/575 and indicate whether or not that 
still fixes the original problem?

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

Confirmed that 3.6.1rc1 fixes the issue in my original use case.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Changes by Nick Coghlan :


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

Oh, well that's by design. Neither the current working directory nor the 
directory of the initial script are in sys.path by default - they need to be 
added explicitly.

The intent of this distro is that you know exactly where relative to the 
executable your modules are, that won't change after you release your app, and 
that you want to avoid other code using your private (embedded) copy of Python.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Eric Frederich]

Eric Frederich added the comment:

I can confirm that this is NOT fixed in 3.6.1rc1 embeddable zip.

This is extremely easy to reproduce.  Look at the contents of foo.py and 
bar.py.  Just throw them in the same directory and try to run 
C:\path\to\extracted\python.exe foo.py

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

Eric - that sounds like the same issue. Can you test with 3.6.1rc1 to see if it 
is fixed for you?

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Eric Frederich]

Eric Frederich added the comment:

I'm wondering if I'm experiencing this same issue.
In a simple directory with a foo.py and a bar.py where foo tries to import from 
bar I cannot get it to work with the embeddable 3.6.0 zip, but the standard 
3.6.0 that gets "installed" works fine.  Also 3.5.3 works fine

C:\Users\eric\Desktop\wtf>more foo.py
from bar import bar

print(bar('hi'))

C:\Users\eric\Desktop\wtf>more bar.py
def bar(s):
return s.upper()

C:\Users\eric\Desktop\wtf>C:\Users\eric\Downloads\python-3.5.3-embed-amd64\python.exe
 foo.py
HI

C:\Users\eric\Desktop\wtf>C:\Users\eric\Downloads\python-3.6.0-embed-amd64\python.exe
 foo.py
Traceback (most recent call last):
  File "foo.py", line 1, in 
from bar import bar
ModuleNotFoundError: No module named 'bar'

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Roundup Robot]

Roundup Robot added the comment:


New changeset baa426f44b86fb146dc17178f61b53ed5ffb08f0 by Steve Dower in branch 
'3.6':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://github.com/python/cpython/commit/baa426f44b86fb146dc17178f61b53ed5ffb08f0

New changeset 5003ad354c6ffd33fa71537a0b33c7f0e17d0093 by Steve Dower in branch 
'3.6':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://github.com/python/cpython/commit/5003ad354c6ffd33fa71537a0b33c7f0e17d0093


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Roundup Robot]

Roundup Robot added the comment:


New changeset baa426f44b86fb146dc17178f61b53ed5ffb08f0 by Steve Dower in branch 
'master':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://github.com/python/cpython/commit/baa426f44b86fb146dc17178f61b53ed5ffb08f0

New changeset 5003ad354c6ffd33fa71537a0b33c7f0e17d0093 by Steve Dower in branch 
'master':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://github.com/python/cpython/commit/5003ad354c6ffd33fa71537a0b33c7f0e17d0093

New changeset a4c1827b15cc8309b4b375db33ee2d85c49475c8 by Steve Dower in branch 
'master':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://github.com/python/cpython/commit/a4c1827b15cc8309b4b375db33ee2d85c49475c8


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Roundup Robot]

Roundup Robot added the comment:


New changeset baa426f44b86fb146dc17178f61b53ed5ffb08f0 by Steve Dower in branch 
'3.5':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://github.com/python/cpython/commit/baa426f44b86fb146dc17178f61b53ed5ffb08f0


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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

That change fixes overwriting sys.path[0], the new logic is essentially:

try:
sys_path0 = sys.path[0]
except:
sys.path.append(argv0)
else:
if sys_path0:
sys.path.insert(0, argv0)
else:
sys.path[0] = argv0

I'm leaving this open for the better API fix for 3.7.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Roundup Robot]

Roundup Robot added the comment:

New changeset c6506f759db1 by Steve Dower in branch '3.5':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://hg.python.org/cpython/rev/c6506f759db1

New changeset 0965e2967056 by Steve Dower in branch '3.6':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://hg.python.org/cpython/rev/0965e2967056

New changeset d0f28ee3affe by Steve Dower in branch 'default':
Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].
https://hg.python.org/cpython/rev/d0f28ee3affe

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Nick Coghlan]

Nick Coghlan added the comment:

I think this is just a straight-up interaction bug where we never accounted for 
the combination of -I with directory and zipfile execution back when -I was 
added.

>From a bug fix perspective, I think the right thing to do in all affected 
>versions would be to add a check to RunMainFromImporter such that it does an 
>insert rather than a set when -I is used.

For 3.7+, it may make sense to change the signature of 
runpy._run_module_as_main to accept the path entry as Steve suggests, as that 
could also resolve the quirk where we'll run a __main__ module from *anywhere* 
on sys.path, rather than only from the given path entry.

The core of the current approach was implemented back in the 2.6 time frame, 
and then tweaked a bit in 2.7, and hence predates all the niceties offered by 
the importlib API.

However, the latter change would be a separate RFE rather than a bug fix.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

I'd say it definitely qualifies as a bug fix, even in 3.5 (which repros), 
assuming we don't break any existing APIs in the process.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

Nice! Thanks for finding this. I don't suppose there's any chance this would 
qualify as a bugfix for 3.6.1? I've been holding off on working on 
https://github.com/pfmoore/pylaunch until 3.6 because 3.5 doesn't handle being 
in a subdirectory very well. It'd be a shame if this meant I could only really 
support 3.7+

But it is a pretty minor use case, so I'll live either way.

FWIW, I'm inclined to think we shouldn't be blindly overwriting things, at the 
very least we should check that what we're overwriting is what we expect. But 
my knowledge of this part of the interpreter is pretty much zero, so I'll defer 
to the experts.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

Found it in Modules/main.c in RunMainFromImporter():

/* argv0 is usable as an import source, so put it in sys.path[0]
   and import __main__ */
sys_path = PySys_GetObject("path");
if (sys_path == NULL) {
PyErr_SetString(PyExc_RuntimeError, "unable to get sys.path");
goto error;
}
if (PyList_SetItem(sys_path, 0, argv0)) {
argv0 = NULL;
goto error;
}
Py_INCREF(argv0);

When running with a ._pth file, we force the -I option, which removes the empty 
entry at sys.path[0]. Instead, it becomes the path to the .zip file with the 
standard library, so when RunMainFromImporter overwrites it blindly, it's 
cutting out the only hope it has of finding runpy.

You can see this in a normal install by doing:

py -I -c "import sys; print(sys.path)"
[correct output]

py -Ii test.pyz
[output from test.pyz]
>>> import sys; sys.path
[incorrect output]

So we need to stop blindly overwriting sys.path[0] here. I'm not sure what the 
best approach would be, but maybe Nick has a preference? Perhaps we should pass 
the zip file path into runpy._run_module_as_main so it can initialize __path__ 
with it rather than making a global change? Or maybe an insert rather than a 
set is the right way and I'm over-thinking this.

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assignee: steve.dower -> 
nosy: +ncoghlan
stage:  -> needs patch
versions: +Python 3.7

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

I just tried it and it makes no difference.

Omitting the "._pth" file seems to fix it, but apart from issue29326 (benign) 
sys.path is fine.

Still digging, but don't worry about testing on other machines.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

Sorry I should have thought of trying -v. The output (included below) doesn't 
seem to offer many hints, though. runpy.pyc is in python36.zip, I checked that.

I'll see if I can find a machine without Python installed to test that case.

>.\python.exe -v .\test.pyz
import _frozen_importlib # frozen
import _imp # builtin
import sys # builtin
import '_warnings' # 
import '_thread' # 
import '_weakref' # 
import '_frozen_importlib_external' # 
import '_io' # 
import 'marshal' # 
import 'nt' # 
import _thread # previously loaded ('_thread')
import '_thread' # 
import _weakref # previously loaded ('_weakref')
import '_weakref' # 
import 'winreg' # 
# installing zipimport hook
import 'zipimport' # 
# installed zipimport hook
# zipimport: found 609 names in 'C:\\Work\\Scratch\\test\\python36.zip'
import 'zlib' # 
# zipimport: zlib available
# zipimport: zlib available
# zipimport: zlib available
# zipimport: zlib available
import '_codecs' # 
import codecs # loaded from Zip C:\Work\Scratch\test\python36.zip\codecs.pyc
# zipimport: zlib available
# zipimport: zlib available
import encodings.aliases # loaded from Zip 
C:\Work\Scratch\test\python36.zip\encodings\aliases.pyc
import encodings # loaded from Zip 
C:\Work\Scratch\test\python36.zip\encodings\__init__.pyc
# zipimport: zlib available
# zipimport: zlib available
import encodings.utf_8 # loaded from Zip 
C:\Work\Scratch\test\python36.zip\encodings\utf_8.pyc
import '_signal' # 
# zipimport: zlib available
# zipimport: zlib available
import encodings.latin_1 # loaded from Zip 
C:\Work\Scratch\test\python36.zip\encodings\latin_1.pyc
# zipimport: zlib available
# zipimport: zlib available
# zipimport: zlib available
# zipimport: zlib available
# zipimport: zlib available
# zipimport: zlib available
import _weakrefset # loaded from Zip 
C:\Work\Scratch\test\python36.zip\_weakrefset.pyc
import abc # loaded from Zip C:\Work\Scratch\test\python36.zip\abc.pyc
import io # loaded from Zip C:\Work\Scratch\test\python36.zip\io.pyc
Python 3.6.0 (v3.6.0:41df79263a11, Dec 23 2016, 08:06:12) [MSC v.1900 64 bit 
(AMD64)] on win32
# zipimport: zlib available
# zipimport: zlib available
import encodings.cp437 # loaded from Zip 
C:\Work\Scratch\test\python36.zip\encodings\cp437.pyc
# zipimport: found 1 names in '.\\test.pyz'
Could not import runpy module
Traceback (most recent call last):
  File "", line 961, in _find_and_load
  File "", line 948, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'runpy'
# clear builtins._
# clear sys.path
# clear sys.argv
# clear sys.ps1
# clear sys.ps2
# clear sys.last_type
# clear sys.last_value
# clear sys.last_traceback
# clear sys.path_hooks
# clear sys.path_importer_cache
# clear sys.meta_path
# clear sys.__interactivehook__
# clear sys.flags
# clear sys.float_info
# restore sys.stdin
# restore sys.stdout
# restore sys.stderr
# cleanup[2] removing builtins
# cleanup[2] removing sys
# cleanup[2] removing _frozen_importlib
# cleanup[2] removing _imp
# cleanup[2] removing _warnings
# cleanup[2] removing _thread
# cleanup[2] removing _weakref
# cleanup[2] removing _frozen_importlib_external
# cleanup[2] removing _io
# cleanup[2] removing marshal
# cleanup[2] removing nt
# cleanup[2] removing winreg
# cleanup[2] removing zipimport
# cleanup[2] removing zlib
# cleanup[2] removing encodings
# destroy encodings
# cleanup[2] removing codecs
# cleanup[2] removing _codecs
# cleanup[2] removing encodings.aliases
# cleanup[2] removing encodings.utf_8
# cleanup[2] removing _signal
# cleanup[2] removing __main__
# destroy __main__
# cleanup[2] removing encodings.latin_1
# cleanup[2] removing io
# destroy io
# cleanup[2] removing abc
# destroy abc
# cleanup[2] removing _weakrefset
# destroy _weakrefset
# cleanup[2] removing encodings.cp437
# destroy zipimport
# destroy zlib
# destroy _signal
# cleanup[3] wiping _frozen_importlib
# destroy _frozen_importlib_external
# cleanup[3] wiping _imp
# cleanup[3] wiping _warnings
# cleanup[3] wiping _thread
# cleanup[3] wiping _weakref
# cleanup[3] wiping _io
# cleanup[3] wiping marshal
# cleanup[3] wiping nt
# cleanup[3] wiping winreg
# cleanup[3] wiping codecs
# cleanup[3] wiping _codecs
# cleanup[3] wiping encodings.aliases
# cleanup[3] wiping encodings.utf_8
# cleanup[3] wiping encodings.latin_1
# cleanup[3] wiping encodings.cp437
# cleanup[3] wiping sys
# cleanup[3] wiping builtins
# destroy _imp
# destroy io
# destroy _warnings
# destroy marshal
# destroy nt
# destroy _thread
# destroy _weakref
# destroy winreg
# destroy _frozen_importlib

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Steve Dower]

Steve Dower added the comment:

Does running with -v provide any more hints?

I'm also interested in whether the alphas work when you don't have a full 
install on the same machine. PC/getpathp.c changed for b1. But that's probably 
less important.

Perhaps runpy just never made it into the python36.zip file?

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

Confirmed that it works with alpha 2, 3 and 4. But fails with beta 1 and the 
release version.

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

Paul Moore added the comment:

I just checked, and 3.6.0b1 (the only prerelease version I had available) has 
the same problem. 3.5.2 works fine.

I thought I'd had similar code working during the beta cycle, but I can't 
demonstrate that any more, so maybe my recollection is wrong :-(

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[issue29319] Embedded 3.6.0 distribution cannot run pyz files

[Paul Moore]

New submission from Paul Moore:

Trying to run a pyz file using the embedded distribution for 3.6.0, I get an 
error "Could not import runpy module".

To reproduce, see below:

>type .\__main__.py
print('Hello, world')
>zip test.pyz __main__.py
  adding: __main__.py (172 bytes security) (stored 0%)
>unzip .\python-3.6.0-embed-amd64.zip
...
>.\python.exe .\test.pyz
Could not import runpy module
ModuleNotFoundError: No module named 'runpy'

Running with the standard interpreter works fine:

>py -V
Python 3.6.0
>py .\test.pyz
Hello, world

--
assignee: steve.dower
components: Windows
messages: 285783
nosy: paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Embedded 3.6.0 distribution cannot run pyz files
type: behavior
versions: Python 3.6

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