neo4j 版本问题导致数据库无法连接
我同学的图书库是3.5.5 他用的py2是py2neo==2020.0.0
在他电脑上图数据库可以连接。
我的图数据版本如下
使用 py2neo == 2020.00 连接图数据库时，报了如下错误
Exception in thread django-main-thread:
Traceback (most recent call last):
File "E:\miniconda3\envs\M_F\lib\site-packages\py2neo\database\__init__.py", line 190, in __new__
inst = cls._instances[profile]
KeyError: ConnectionProfile('http://[email protected]:7474')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "E:\miniconda3\envs\M_F\lib\site-packages\py2neo\client\__init__.py", line 517, in acquire
cx = self._free_list.popleft()
IndexError: pop from an empty deque
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "E:\miniconda3\envs\M_F\lib\threading.py", line 916, in _bootstrap_inner
self.run()
File "E:\miniconda3\envs\M_F\lib\threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\core\management\commands\runserver.py", line 118, in inner_
run
self.check(display_num_errors=True)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\core\management\base.py", line 423, in check
databases=databases,
File "E:\miniconda3\envs\M_F\lib\site-packages\django\core\checks\registry.py", line 76, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\core\checks\urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\core\checks\urls.py", line 23, in check_resolver
return check_method()
File "E:\miniconda3\envs\M_F\lib\site-packages\django\urls\resolvers.py", line 412, in check
for pattern in self.url_patterns:
File "E:\miniconda3\envs\M_F\lib\site-packages\django\utils\functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\urls\resolvers.py", line 598, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\utils\functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "E:\miniconda3\envs\M_F\lib\site-packages\django\urls\resolvers.py", line 591, in urlconf_module
return import_module(self.urlconf_name)
File "E:\miniconda3\envs\M_F\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 994, in _gcd_import
File "", line 971, in _find_and_load
File "", line 955, in _find_and_load_unlocked
File "", line 665, in _load_unlocked
File "", line 678, in exec_module
File "", line 219, in _call_with_frames_removed
File "C:\Users\13994\Desktop\frontend_medical\medical_knowledge_graph_app-master-master\med_kg\med_kg\urls.py", l
ine 24, in
from med_kg import ner_view
File "C:\Users\13994\Desktop\frontend_medical\medical_knowledge_graph_app-master-master\med_kg\med_kg\ner_view.py
", line 10, in
from util.pre_load import classifier
File "C:\Users\13994\Desktop\frontend_medical\medical_knowledge_graph_app-master-master\med_kg\util\pre_load.py",
line 119, in
neo4jconn = init_neo4j()
File "C:\Users\13994\Desktop\frontend_medical\medical_knowledge_graph_app-master-master\med_kg\util\pre_load.py",
line 66, in init_neo4j
neo4jconn.connectNeo4j()
File "C:\Users\13994\Desktop\frontend_medical\medical_knowledge_graph_app-master-master\med_kg\Model\neo4j_models
.py", line 13, in connectNeo4j
self.graph = Graph("http://127.0.0.1:7474", username="neo4j", password="pen")
File "E:\miniconda3\envs\M_F\lib\site-packages\py2neo\database\__init__.py", line 377, in __new__
KeyError: 'neo4j_version'
再保证数据库的密码和用户名都正确的情况下
还是无法连接
最后换了包 Neo4j 3.5.34 要对应 py2 == 4.3.0
Neo4j 3.5.5 可以对应py2 == 2020得