AttributeError: 'module' object has no attribute '_base' with beautifulsoup4 4.4.0

I install grow by pip install:

$ pip install grow
$ # or 
$ pip install https://github.com/grow/grow/archive/master.zip

then run:

$ grow --help
Traceback (most recent call last):
  File "/home/miniconda2/envs/flecom/bin/grow", line 34, in <module>
    from grow.common import ca_certs_locater
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/grow/__init__.py", line 12, in <module>
    from .pods.pods import Pod
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/grow/pods/pods.py", line 3, in <module>
    from . import catalog_holder
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/grow/pods/catalog_holder.py", line 10, in <module>
    from grow.common import utils
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/grow/common/utils.py", line 9, in <module>
    import bs4
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/bs4/__init__.py", line 30, in <module>
    from .builder import builder_registry, ParserRejectedMarkup
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/bs4/builder/__init__.py", line 314, in <module>
    from . import _html5lib
  File "/home/miniconda2/envs/flecom/lib/python2.7/site-packages/bs4/builder/_html5lib.py", line 70, in <module>
    class TreeBuilderForHtml5lib(html5lib.treebuilders._base.TreeBuilder):
AttributeError: 'module' object has no attribute '_base'

Upgrading to the latest beautifulsoup4 fixes the problem.

$  pip install --no-cache-dir --upgrade beautifulsoup4
Collecting beautifulsoup4
  Downloading beautifulsoup4-4.5.3-py2-none-any.whl (85kB)
    100% |████████████████████████████████| 92kB 1.1MB/s 
Installing collected packages: beautifulsoup4
  Found existing installation: beautifulsoup4 4.4.0
    Uninstalling beautifulsoup4-4.4.0:
      Successfully uninstalled beautifulsoup4-4.4.0
Successfully installed beautifulsoup4-4.5.3
$ grow --help
Warning: libyaml missing, using slower yaml parser.
Usage: grow [OPTIONS] COMMAND [ARGS]...

  Grow is a declarative file-based website generator. Read docs at
  https://grow.io. This is version 0.1.0.
....

So I think we should change the beautofulsoup4 version in requirements.txt file.

[Zoramite]

@hieu-n That is to mark the field for translation: http://grow.io/docs/content-localization/#front-matter-localization

[Zoramite]

Thanks. When we do the release builds my understanding is that the release binary packages the libyaml so the libyaml should only be an issue when you are installing from master or from the cloned repo.

I’ve added the upgrade command to our make file so that people using a cloned version can get the benefit of the faster parser.

Also check out the https://github.com/grow/grow#developing-grow-itself instructions if you are thinking of using grow from a clone.