yaml 'module' has no attribute 'Dumper'

On latest develop, I’m getting the following backtrace when installing (python setup.py install):

  File "/xxxxxxxxx/salt/salt/utils/jinja.py", line 35, in <module>
    class OrderedDictDumper(yaml.Dumper):
AttributeError: 'module' object has no attribute 'Dumper'

This patch fixes it, but I’m not sure it’s the correct solution: https://github.com/mgwilliams/salt/compare/yaml-dumper

Oddly, I can run this from a bash prompt just fine:

echo "import yaml; yaml.Dumper(None, None)" | python

Issue Analytics

State:
Created 10 years ago
Comments:8 (7 by maintainers)

Top GitHub Comments

1reaction

kaivu1999commented, May 6, 2021

As I see this is quite an old error. But I happened to run in the exact same error while importing omegaconf.

PyYAML version was 5.4.1, and downgrading it to 5.4.0 worked! Weird 😃

pip install PyYAML==5.4.0

0reactions

edlanecommented, Mar 13, 2014

I just hit this same problem… The fix required me to remove a residual yaml.py left over from a previous build in the ./build/lib.linux-x86_64-2.7/salt/utils/ build directory. python setup.py build should probably delete everything in the target directories before generating their contents over again in order that cruft files are removed. python setup.py clean does not seem to remove old cruft *.py files either.

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