** Description changed:
+ [Impact]
+ python-qrencode is currently broken for all users in yakkety due to the
removal of Image.fromstring from pillow.
+
+ The fix is to replace all calls to Image.fromstring with
+ Image.frombytes.
+
+ [Test Case]
+ Run the following script and see if it ends in an exception:
+
+ ```
+ import qrencode
+ qrencode.encode_scaled("foo", 1)
+ ```
+
+ [Regression Potential]
+ It's unlikely that python-qrencode can regress any further, because in its
current state, both exported python methods are completely broken and will
throw an exception unconditionally with the pillow version in Yakkety.
+
+ [Other Info]
+ rdeps may also be broken if they use Image.tostring on the output. So far,
the only known rdep that is broken is qreator.
+
+ Below is the stack trace and exception thrown by the broken version of
+ qrencode.
+
In [5]: qrencode.encode_scaled("foo",1)
---------------------------------------------------------------------------
Exception Traceback (most recent call last)
<ipython-input-5-be07c22beab2> in <module>()
----> 1 qrencode.encode_scaled("foo",1)
/usr/lib/python2.7/dist-packages/qrencode/__init__.pyc in encode_scaled(data,
size, version, level, hint, case_sensitive)
- 67 the QR-code.
- 68 """
+ 67 the QR-code.
+ 68 """
---> 69 version, src_size, im = encode(data, version, level, hint,
case_sensitive)
- 70 if size < src_size:
- 71 size = src_size
+ 70 if size < src_size:
+ 71 size = src_size
/usr/lib/python2.7/dist-packages/qrencode/__init__.pyc in encode(data,
version, level, hint, case_sensitive)
- 45 version, size, data = _encode(data, version, level, hint,
False)
- 46
+ 45 version, size, data = _encode(data, version, level, hint,
False)
+ 46
---> 47 im = Image.fromstring('L', (size, size), data)
- 48 return (version, size, im)
- 49
+ 48 return (version, size, im)
+ 49
/usr/lib/python2.7/dist-packages/PIL/Image.pyc in fromstring(*args, **kw)
- 2061 def fromstring(*args, **kw):
- 2062 raise Exception("fromstring() has been removed. " +
+ 2061 def fromstring(*args, **kw):
+ 2062 raise Exception("fromstring() has been removed. " +
-> 2063 "Please call frombytes() instead.")
- 2064
- 2065
+ 2064
+ 2065
Exception: fromstring() has been removed. Please call frombytes()
instead.
In [6]:
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: python-qrencode 1.01-5
Uname: Linux 4.6.0-040600-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue May 31 07:40:21 2016
InstallationDate: Installed on 2015-12-02 (180 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64
(20151027)
SourcePackage: python-qrencode
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/1587249
Title:
PIL exception fromstring
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