<html><head><style type="text/css" media="screen">Body{font-family: Verdana;font-size:.75em;}h4{font-size:.9em;}a{color: #3a62a6;}.digest .toc {margin-bottom: 15px; padding-bottom:8px; border-bottom: 1px solid #ccc;}.digest .tocItem {margin-bottom: 15px;}.tocItem a{color:#000;text-decoration: none;}.tocItem a:hover{color: #3a62a6;text-decoration: underline;}.topic{padding-bottom: 8px;margin-bottom: 20px; border-bottom: 1px solid #ccc;}.topicHeader{margin-bottom:10px;}.topicTitle{font-weight: bold;}.replies p{margin:0;padding:0;}.replies hr{width: 15%;text-align: left;margin: 0 auto 5px 0;border: none 0;border-top: 1px solid #ccc;height: 1px;}.reply{margin-bottom: 6px;padding-bottom: 4px;}.anchorMarker{color: #3a62a6;}.footer{color: gray;}</style></head><body><div class="digest"><p>Hi ironpython,</p><p>Here's your Daily Digest of new issues for project "<a href="http://ironpython.codeplex.com/">IronPython</a>".</p><p>In today's digest:</p><h4>ISSUES</h4><div class="toc"><div class="tocItem"><a href="#toc_issue_1">1. <span class="tocTitle">[New issue] dict.copy() raises SystemError if None is used as a key</span> <span class="anchorMarker">↓</span></a></div><div class="tocItem"><a href="#toc_issue_2">2. <span class="tocTitle">[New comment] dict.copy() raises SystemError if None is used as a key</span> <span class="anchorMarker">↓</span></a></div></div><h4>ISSUES</h4><div class="topic"><a name="toc_issue_1"></a><div class="topicHeader"><span class="topicTitle">1. [New issue] dict.copy() raises SystemError if None is used as a key</span> <a href="http://ironpython.codeplex.com/workitem/35626">view online</a></div><p>User tcalmant has proposed the issue:</p><p>"When copying a dictionary containing a key set to None, a SystemError is raised:<br />
<pre><code>IronPython 2.7.4 (2.7.0.40) on .NET 4.0.30319.34014 (32-bit)
Type "help", "copyright", "credits" or "license" for more information.
>>> {1: 2}.copy()
{1: 2}
>>> {None: 2}.copy()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
SystemError: Object reference not set to an instance of an object.</code></pre>
FYI, the copy.copy() method works well in that case:<br />
<pre><code>>>> import copy
>>> copy.copy({None:2})
{None: 2}</code></pre>
"</p></div><div class="topic"><a name="toc_issue_2"></a><div class="topicHeader"><span class="topicTitle">2. [New comment] dict.copy() raises SystemError if None is used as a key</span> <a href="http://ironpython.codeplex.com/workitem/35626">view online</a></div><p>User tcalmant has commented on the issue:</p><p>"<p>The exception occurs only when trying to access the content of the dictionary, not during the copy process.</p><p>```<br>>>> {None: 2}.copy()<br>Traceback (most recent call last):<br> File "<stdin>", line 1, in <module><br>SystemError: La référence d'objet n'est pas définie à une instance d'un objet.<br>>>> b = {None: 2}.copy()<br>>>> id(b)<br>43<br>>>> b<br>Traceback (most recent call last):<br> File "<stdin>", line 1, in <module><br>SystemError: Object reference not set to an instance of an object.<br>```</p>"</p></div><div class="footer"><p>You are receiving this email because you subscribed to notifications on CodePlex.</p><p>To report a bug, request a feature, or add a comment, visit <a href="http://ironpython.codeplex.com/workitem/list/basic">IronPython Issue Tracker</a>. You can <a href="http://ironpython.codeplex.com/subscriptions/workitem/project/edit">unsubscribe or change your issue notification settings</a> on CodePlex.com.</p></div></div></body></html>