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Ticket Resolution Summary Owner Reporter
#31 fixed PyYAML for Python 2.5 xi edemaine@…

Reported by edemaine@…, 8 years ago.

Description

Could you compile a Windows binary of PyYAML for Python 2.5 (released fairly recently)? Ideally with libyaml support built in...

#33 fixed PyYAML + libyyaml shouldn't need PyRex xi edemaine@…

Reported by edemaine@…, 8 years ago.

Description

In my understanding of PyRex? (which, I admit, is fairly limited), it is a tool that converts PyRex? code into C (.c, .h, etc.) and Python code. Can't this conversion be done ahead of time when assembling a distribution, so that you don't need PyRex? on the install side? (Same as running lex or yacc etc. at distribution time instead of install time.) Or is there something more subtle going on during installation that this is actually necessary?

Reducing the barrier to installation should make the "fast PyYAML solution" (PyYAML + libyaml) more widely available.

#50 fixed ScannerError TypeError xi edemaine@…

Reported by edemaine@…, 7 years ago.

Description

I encountered a small bug in error reporting with the libyaml interface:

## A "real-world" example: mistaken input HTML instead of YAML.
>>> x='<HTML>\n  <HEAD>\n    <STYLE>\n      TABLE { border-collapse: collapse; }\n    </STYLE>\n  </HEAD>\n</HTML>'

>>> yaml.load(x)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/__init__.py", line 66, in load
    return loader.get_data()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/constructor.py", line 38, in get_data
    return self.construct_document(self.get_node())
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/composer.py", line 37, in compose_document
    self.get_event()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/parser.py", line 115, in get_event
    self.current_event = self.state()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/parser.py", line 186, in parse_document_end
    token = self.peek_token()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/scanner.py", line 128, in peek_token
    self.fetch_more_tokens()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/scanner.py", line 220, in fetch_more_tokens
    return self.fetch_value()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/scanner.py", line 579, in fetch_value
    self.get_mark())
yaml.scanner.ScannerError: mapping values are not allowed here
  in "<string>", line 4, column 30:
          TABLE { border-collapse: collapse; }
                                 ^
## great error reporting

>>> yaml.load(x,yaml.CLoader)                                                   Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/__init__.py", line 66, in load
    return loader.get_data()
  File "/toc/home/edemaine/Packages/lib/python2.6/site-packages/yaml/constructor.py", line 38, in get_data
    return self.construct_document(self.get_node())
  File "_yaml.pyx", line 664, in _yaml.CParser.get_node
  File "_yaml.pyx", line 669, in _yaml.CParser._compose_document
  File "_yaml.pyx", line 848, in _yaml.CParser._parse_next_event
TypeError: exceptions must be strings, classes, or instances, not ScannerError
## not so useful--seems to be a bug

I didn't investigate why ScannerError is considered to be a class in the first case but not the second; perhaps _yaml defines its own ScannerError? type? Should probably just use yaml.scanner.ScannerError instead.

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