Test failure: test_venv

Bug #1655220 reported by Anthony Sottile on 2017-01-10
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
python3.5 (Ubuntu)
Undecided
Unassigned

Bug Description

```
$ python3.5 -m test test_venv
[1/1] test_venv
test test_venv failed -- Traceback (most recent call last):
  File "/usr/lib/python3.5/test/test_venv.py", line 407, in test_with_pip
    self.assertEqual(err.rstrip(), "")
AssertionError: 'Traceback (most recent call last):\n Fil[597 chars]list' != ''
- Traceback (most recent call last):
- File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main
- "__main__", mod_spec)
- File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
- exec(code, run_globals)
- File "/usr/lib/python3.5/ensurepip/_uninstall.py", line 30, in <module>
- _main()
- File "/usr/lib/python3.5/ensurepip/_uninstall.py", line 26, in _main
- ensurepip._uninstall_helper(verbosity=args.verbosity)
- File "/usr/lib/python3.5/ensurepip/__init__.py", line 203, in _uninstall_helper
- _run_pip(args + reversed(_PROJECTS))
- TypeError: can only concatenate list (not "list_reverseiterator") to list

1 test failed:
    test_venv
```

The debian patch here is buggy (even in python2) as reversed returns an iterator. A patch to the patch which fixes this:

```diff
diff --git a/debian/patches/ensurepip-wheels.diff b/debian/patches/ensurepip-wheels.diff
index df5de92..858feb0 100644
--- a/debian/patches/ensurepip-wheels.diff
+++ b/debian/patches/ensurepip-wheels.diff
@@ -115,7 +115,7 @@ Index: b/Lib/ensurepip/__init__.py
          args += ["-" + "v" * verbosity]

 - _run_pip(args + [p[0] for p in reversed(_PROJECTS)])
-+ _run_pip(args + reversed(_PROJECTS))
++ _run_pip(args + list(reversed(_PROJECTS)))

  def _main(argv=None):
```

```
$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
$ apt-cache policy python3.5
python3.5:
  Installed: 3.5.2-2ubuntu0~16.04.1
  Candidate: 3.5.2-2ubuntu0~16.04.1
  Version table:
 *** 3.5.2-2ubuntu0~16.04.1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status
     3.5.1-10 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
```

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