我已经设置了odoo11数据库并尝试安装stock模块，但它会生成python yaml错误。
错误日志：
2019-04-09 12:21:06,147 15820 INFO sicpa_db odoo.modules.loading: loading stock/views/stock_template.xml
2019-04-09 12:21:06,391 15820 INFO sicpa_db odoo.modules.loading: loading stock/views/procurement_views.xml
2019-04-09 12:21:06,546 15820 INFO sicpa_db odoo.modules.loading: loading stock/data/default_barcode_patterns.xml
2019-04-09 12:21:06,592 15820 INFO sicpa_db odoo.modules.loading: loading stock/data/stock_data.xml
2019-04-09 12:21:07,294 15820 INFO sicpa_db odoo.modules.loading: loading stock/data/stock_data.yml
2019-04-09 12:21:07,300 15820 WARNING sicpa_db odoo.modules.loading: Transient module states were reset
2019-04-09 12:21:07,336 15820 ERROR sicpa_db odoo.modules.registry: Failed to load registry
Traceback (most recent call last):
File "/home/gajanan/others/erp/odoo11-git/odoo/modules/registry.py", line 85, in new
odoo.modules.load_modules(registry._db, force_demo, status, update_module)
File "/home/gajanan/others/erp/odoo11-git/odoo/modules/loading.py", line 380, in load_modules
loaded_modules, update_module, models_to_check)
File "/home/gajanan/others/erp/odoo11-git/odoo/modules/loading.py", line 274, in load_marked_modules
perform_checks=perform_checks, models_to_check=models_to_check
File "/home/gajanan/others/erp/odoo11-git/odoo/modules/loading.py", line 181, in load_module_graph
_load_data(cr, module_name, idref, mode, kind='data')
File "/home/gajanan/others/erp/odoo11-git/odoo/modules/loading.py", line 95, in _load_data
tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
File "/home/gajanan/others/erp/odoo11-git/odoo/tools/convert.py", line 789, in convert_file
convert_yaml_import(cr, module, fp, kind, idref, mode, noupdate, report)
File "/home/gajanan/others/erp/odoo11-git/odoo/tools/yaml_import.py", line 854, in yaml_import
yaml_interpreter.process(yaml_string)
File "/home/gajanan/others/erp/odoo11-git/odoo/tools/yaml_import.py", line 794, in process
for node in yaml.load(yaml_string):
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/__init__.py", line 114, in load
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 43, in get_single_data
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 52, in construct_document
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 404, in construct_yaml_map
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 210, in construct_mapping
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 131, in construct_mapping
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 92, in construct_object
File "/home/gajanan/.local/lib/python3.5/site-packages/yaml/constructor.py", line 420, in construct_undefined
yaml.constructor.ConstructorError: could not determine a constructor for the tag '!python'
in "<byte string>", line 2, column 3:
!python {model: ir.model.data, i ...
^
我也无法安装其他应用，请帮忙。
你可能遇到了问题，因为PyYAML有一些重大变化，因为依赖于PyYAML的软件包还没有更新和/或没有固定到旧版本的PyYAML。
你应该做的是运行pip list，看看你有什么版本的PyYAML。如果该版本> = 4.0，则运行：
pip install -U pyyaml==3.13
PyYAML不在odoo的requirements.txt中，所以你可能得到了最新版本的PyYAML，它不再（不再）兼容。