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Ticket #254 (new defect)

Opened 2 years ago

Last modified 5 days ago

Errors with Numpy Dtypes

Reported by: cronburg@… Owned by: xi
Priority: normal Component: pyyaml
Severity: normal Keywords: pyyaml numpy dtype TypeError
Cc:

Description

Dumping / loading numpy floats works as expected, but it seems like most of the others fail:

import yaml import numpy as np yaml.load(yaml.dump(np.float64(10)))

10.0

yaml.load(yaml.dump(np.int32(10)))

Traceback (most recent call last):

File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/site-packages/yaml/init.py", line 202, in dump

return dump_all([data], stream, Dumper=Dumper, kwds)

File "/usr/local/lib/python2.7/site-packages/yaml/init.py", line 190, in dump_all

dumper.represent(data)

File "/usr/local/lib/python2.7/site-packages/yaml/representer.py", line 28, in represent

node = self.represent_data(data)

File "/usr/local/lib/python2.7/site-packages/yaml/representer.py", line 61, in represent_data

node = self.yaml_multi_representers[data_type](self, data)

File "/usr/local/lib/python2.7/site-packages/yaml/representer.py", line 437, in represent_object

return self.represent_sequence(tag+function_name, args)

File "/usr/local/lib/python2.7/site-packages/yaml/representer.py", line 101, in represent_sequence

node_item = self.represent_data(item)

File "/usr/local/lib/python2.7/site-packages/yaml/representer.py", line 41, in represent_data

if self.ignore_aliases(data):

File "/usr/local/lib/python2.7/site-packages/yaml/representer.py", line 142, in ignore_aliases

if data in [None, ()]:

TypeError?: data type not understood

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Change History

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comment:7 Changed 6 days ago by liwa <dirosie46@…>

The second issue is that the emitter escapes non-ASCII characters even when all characters are printable (according to 'c-printable' in the YAML spec) when using an encoding (UTF8) that supports such characters. I don't find this as elegant as could be. Instead of the "Fran\xE7ais" output above, I would have hoped for the UTF8-encoded byte string Fran\xc3\xa7ais\n.

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