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Ticket Resolution Summary Owner Reporter
#181 fixed No symbols exported from yaml.dll xi pxn11432@…

Reported by pxn11432@…, 7 years ago.


yaml.dll built in vs2008 doesn't export any symbols.

It has been corrected by declaring WIN32 pre-processor macro in yamldll.vcproj project.


#179 duplicate Python-yaml crashes on unhashable key xi Samuel.Hym@…

Reported by Samuel.Hym@…, 7 years ago.



Python-yaml (debian version 3.09-5 of python-yaml, on python 2.6.6) refuses to load a yaml document containing a unhashable element as a key.

For example :

>>> yaml.load('[]: a')

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/dist-packages/yaml/", line 58, in load
    return loader.get_single_data()
  File "/usr/lib/python2.6/dist-packages/yaml/", line 44, in get_single_data
    return self.construct_document(node)
  File "/usr/lib/python2.6/dist-packages/yaml/", line 53, in construct_document
    for dummy in generator:
  File "/usr/lib/python2.6/dist-packages/yaml/", line 403, in construct_yaml_map
    value = self.construct_mapping(node)
  File "/usr/lib/python2.6/dist-packages/yaml/", line 213, in construct_mapping
    return BaseConstructor.construct_mapping(self, node, deep=deep)
  File "/usr/lib/python2.6/dist-packages/yaml/", line 137, in construct_mapping
    "found unacceptable key (%s)" % exc, key_node.start_mark)
yaml.constructor.ConstructorError: while constructing a mapping
found unacceptable key (unhashable type: 'list')
  in "<string>", line 1, column 1:
    []: a

I don't know what would be the most desirable python object to build for that kind of yaml source, though :/

Best regards

Samuel Hym

#177 fixed Secirity risk: easy_install reads a wiki page to get tarball path xi upadhyay@…

Reported by upadhyay@…, 7 years ago.


This is a *huge* security risk. Anyone can modify the wiki page:, adding a malicious tarball location, that will be downloaded by easy_install and run as root on everyone who tries to install PyYAML.

At the very least please make the wiki page editable by only few people. Or make the pypi download location point to something more "reliable".

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