neomodel giving Attribute error on save - python

I am running the following config for neo4j:
neo4j - 3.0.0
py2neo - 2.0.8
neomodel - 2.0.2
Finally, the code I try to run is:
class User(neomodel.StructuredNode):
user_id = neomodel.IntegerProperty(unique_index=True, required=True)
name = neomodel.StringProperty()
phone_number = neomodel.StringProperty()
user = User(user_id=6, name='Sourabh Dev', phone_number='9711237840').save()
I don't understand, why I keep getting this strange error. Am I doing something wrong here or should I use py2neo instead of neomodel?
My traceback is:
Traceback (most recent call last):
File "<input>", line 1, in <module>
File "/usr/local/lib/python3.4/site-packages/neomodel-2.0.2-py3.4.egg/neomodel/signals.py", line 25, in hooked
val = fn(self, *args, **kwargs)
File "/usr/local/lib/python3.4/site-packages/neomodel-2.0.2-py3.4.egg/neomodel/core.py", line 159, in save
self._id = self.create(self.__properties__)[0]._id
File "/usr/local/lib/python3.4/site-packages/neomodel-2.0.2-py3.4.egg/neomodel/core.py", line 289, in create
results = db.cypher_query(query, params)
File "/usr/local/lib/python3.4/site-packages/neomodel-2.0.2-py3.4.egg/neomodel/util.py", line 213, in cypher_query
results = self._execute_query(query, params)
File "/usr/local/lib/python3.4/site-packages/neomodel-2.0.2-py3.4.egg/neomodel/util.py", line 207, in _execute_query
results = self.session.cypher.execute(query, create_params=params)
File "/usr/local/lib/python3.4/site-packages/py2neo/cypher/core.py", line 136, in execute
results = tx.commit()
File "/usr/local/lib/python3.4/site-packages/py2neo/cypher/core.py", line 333, in commit
return self.post(self.__commit or self.__begin_commit)
File "/usr/local/lib/python3.4/site-packages/py2neo/cypher/core.py", line 288, in post
raise self.error_class.hydrate(error)
File "/usr/local/lib/python3.4/site-packages/py2neo/cypher/error/core.py", line 54, in hydrate
error_cls = getattr(error_module, title)
AttributeError: 'module' object has no attribute 'TypeError'


Two points here:
Existing Neomodel doesn't support the Neo4j 3.0
Cypher syntax has changed in 3.0, so the error raises.
In 2.x , MATCH n RETURN n
In 3.0 , MATCH (n) RETURN n
Node n is enclosed in braces.

Related

Locust put request is randomly failing

My locust file has put requests but sometimes it's passing sometimes failing. Can anyone explain why that's happening?
Here is my locust file
def _generate_put_data(self) -> str:
if len(self.ids) > 0:
teacher_name = self.generate_random_string()
teacher_email = f"{self.generate_random_string()}#{self.generate_random_string()}.{self.generate_random_string()}"
teacher_email = teacher_email.replace("#", "%40")
teacher_id = str(random.choice(self.ids))
request_string = f"{self.path_all}/{teacher_id}?teacherName={teacher_name}&teacherEmail={teacher_email}"
return request_string
#task(2)
def put_request(self):
self.client.put(url=self._generate_put_data())
...
_generate_put_data method returns a string, which is a query.
Here is the error:
[2023-01-26 11:39:12,357] pop-os/ERROR/locust.user.task: expected string or bytes-like object
Traceback (most recent call last):
File "/home/XXX/.local/lib/python3.10/site-packages/locust/user/task.py", line 347, in run
self.execute_next_task()
File "/home/XXX/.local/lib/python3.10/site-packages/locust/user/task.py", line 372, in execute_next_task
self.execute_task(self._task_queue.pop(0))
File "/home/XXX/.local/lib/python3.10/site-packages/locust/user/task.py", line 493, in execute_task
task(self.user)
File "/home/XXX/Desktop/my-projects/spring-boot-app/performans-testing/locust.py", line 44, in put_request
self.client.put(url=self._generate_put_data())
File "/home/XXX/.local/lib/python3.10/site-packages/requests/sessions.py", line 647, in put
return self.request("PUT", url, data=data, **kwargs)
File "/home/XXX/.local/lib/python3.10/site-packages/locust/clients.py", line 131, in request
url = self._build_url(url)
File "/home/XXX/.local/lib/python3.10/site-packages/locust/clients.py", line 81, in _build_url
if absolute_http_url_regexp.match(path):
TypeError: expected string or bytes-like object

django-import-export | issue in importing data to database | ValueError: Field 'id' expected a number but got ''

I am using Django-import-export for importing data but facing an error given below.
i am using django 4.0.6 python 3.10.5 with PostgreSql and most latest version of django import export
Code settings i tried to import data to postgresql database by django-import-export
class MemberResource(resources.ModelResource):
Brand=Field()
class Meta:
model = model
fields=('id','title','Model_code','Chipset','chipset_description','image','Brand','Cat')
export_order=('id','title','Model_code','Chipset','chipset_description','image','Brand','Cat')
def dehydrate_Brand(self, obj):
return str(obj.Brand.title)
class modelAdmin(ImportExportModelAdmin):
resource_class = MemberResource
list_display=['id','title','Model_code','Chipset','chipset_description','Brand','categories']
search_fields = ['title','Model_code','Chipset',]
fields=('title','Model_code','Chipset','chipset_description','image','Brand','Cat')
admin.site.register(model,modelAdmin)
and got below error also attached the image where i exported the data from app and then edited the same and tried to import and stuck with below error.
[Line number: 1 - Field 'id' expected a number but got ''.
2, f9, sd, gf, kjkj, images/sample_3pahsfV.jfif, 1, 1
Traceback (most recent call last):
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\fields\related_descriptors.py", line 187, in _get_
rel_obj = self.field.get_cached_value(instance)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\fields\mixins.py", line 15, in get_cached_value
return instance._state.fields_cache\[cache_name\]
KeyError: 'Brand'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\fields\_init_.py", line 1988, in get_prep_value
return int(value)
ValueError: invalid literal for int() with base 10: ''
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\import_export\resources.py", line 707, in import_row
diff = self.get_diff_class()(self, original, new)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\import_export\resources.py", line 241, in _init_
self.left = self._export_resource_fields(resource, instance)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\import_export\resources.py", line 262, in _export_resource_fields
return \[resource.export_field(f, instance) if instance else "" for f in resource.get_user_visible_fields()\]
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\import_export\resources.py", line 262, in <listcomp>
return \[resource.export_field(f, instance) if instance else "" for f in resource.get_user_visible_fields()\]
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\import_export\resources.py", line 919, in export_field
return method(obj)
File "C:\Users\gsminfinity\Desktop\Master\admin\firmApp\admin.py", line 20, in dehydrate_Brand
return str(obj.Brand.title)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\fields\related_descriptors.py", line 205, in _get_
rel_obj = self.get_object(instance)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\fields\related_descriptors.py", line 168, in get_object
return qs.get(self.field.get_reverse_related_filter(instance))
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\query.py", line 482, in get
clone = self._chain() if self.query.combinator else self.filter(*args, **kwargs)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\query.py", line 1071, in filter
return self._filter_or_exclude(False, args, kwargs)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\query.py", line 1089, in _filter_or_exclude
clone._filter_or_exclude_inplace(negate, args, kwargs)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\query.py", line 1096, in _filter_or_exclude_inplace
self._query.add_q(Q(*args, **kwargs))
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\sql\query.py", line 1502, in add_q
clause, _ = self._add_q(q_object, self.used_aliases)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\sql\query.py", line 1532, in _add_q
child_clause, needed_inner = self.build_filter(
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\sql\query.py", line 1358, in build_filter
return self._add_q(
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\sql\query.py", line 1532, in _add_q
child_clause, needed_inner = self.build_filter(
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\sql\query.py", line 1448, in build_filter
condition = self.build_lookup(lookups, col, value)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\sql\query.py", line 1273, in build_lookup
lookup = lookup_class(lhs, rhs)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\lookups.py", line 27, in _init_
self.rhs = self.get_prep_lookup()
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\lookups.py", line 85, in get_prep_lookup
return self.lhs.output_field.get_prep_value(self.rhs)
File "C:\Users\gsminfinity\Desktop\Master\venv\lib\site-packages\django\db\models\fields\_init_.py", line 1990, in get_prep_value
raise e._class_(
ValueError: Field 'id' expected a number but got ''.][1]

the issue was dehydrating foreign key gives only read-only data which was for the purpose of export only to import we need to use the widgets which will resolve the foreign keys and import the data to database.
Link to Documentation
class MemberResource(resources.ModelResource):
Brand = fields.Field(
column_name='Brand',
attribute='Brand',
widget=ForeignKeyWidget(brand, 'title'))
class Meta:
model = model
fields=('id','title','Model_code','Chipset','chipset_description','image','Brand','Cat')

That means that there are missing values in the "id" column.
I don't know "Django import / export", sounds very good. An old way of mine with any import/export is to export some sample data and then open it in excel or pandas. Because of the following:
You have all the required columns.
The columns are in the correct order.
And if you have test data you can see the data-types of each column.
Take care using Excel because it changes True into TRUE and generates weird date formats.
Another issue is that after importing django u must also be aware of the last "id" number in order to give the correct AutoIncrement for a new record. That's usually corrected with SQL, but maybe "Django-import-export" corrects this automatically.

DjangoMySQLConverter object has no attribute _tuple_to_mysql

Using the mysql.connector package (with Django), and executing:
c.execute("""
select *
from shop_sales
where product_id in %s
""", [(83, 84, 85, 87, 88, 89)])
We get the following traceback:
Traceback (most recent call last):
File "/srv/venv/dev35/lib/python3.5/site-packages/mysql/connector/conversion.py", line 179, in to_mysql
return getattr(self, "_{0}_to_mysql".format(type_name))(value)
AttributeError: 'DjangoMySQLConverter' object has no attribute '_tuple_to_mysql'
This is reported as a bug at https://bugs.mysql.com/bug.php?id=89112, but I'm trying to find a workaround by writing a converter (from my settings.py):
from mysql.connector.django.base import DjangoMySQLConverter
def _tuple_to_mysql(self, value):
res = []
for item in value:
msval = self.to_mysql(item)
if not isinstance(msval, bytes):
msval = str(msval).encode()
res.append(msval)
return b'(' + b', '.join(res) + b')'
DjangoMySQLConverter._tuple_to_mysql = _tuple_to_mysql
but it looks like mysql.connector is adding extra quotes around it:
Traceback (most recent call last):
File "/srv/venv/dev35/lib/python3.5/site-packages/mysql/connector/django/base.py", line 176, in _execute_wrapper
return method(query, args)
File "/srv/venv/dev35/lib/python3.5/site-packages/mysql/connector/cursor.py", line 561, in execute
self._handle_result(self._connection.cmd_query(stmt))
File "/srv/venv/dev35/lib/python3.5/site-packages/mysql/connector/connection.py", line 525, in cmd_query
result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query))
File "/srv/venv/dev35/lib/python3.5/site-packages/mysql/connector/connection.py", line 427, in _handle_result
raise errors.get_exception(packet)
mysql.connector.errors.ProgrammingError: 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''(83, 84, 85, 87, 88, 89)'
What am I doing wrong?

PyOrient SQL Query MemoryError

I have to read from a OrientDB. To test that everything works I tried to read from the Database with the SELECT Statement.
like this:
import pyorient
client = pyorient.OrientDB("adress", 2424)
session_id = client.connect("root", "password")
client.db_open("table","root","password")
print str(client.db_size())
client.query("SELECT * FROM L1_Req",1)
The Connection works fine and also the print str(client.db_size()) line.
But at client.query("SELECT * FROM L1_Req",1) it returns the following Error Message:
Traceback (most recent call last):
File "testpy.py", line 9, in <module>
client.query("SELECT * FROM L1_Req",1)
File "C:\app\tools\python27\lib\site-packages\pyorient\orient.py", line 470, i
n query
.prepare(( QUERY_SYNC, ) + args).send().fetch_response()
File "C:\app\tools\python27\lib\site-packages\pyorient\messages\commands.py",
line 144, in fetch_response
super( CommandMessage, self ).fetch_response()
File "C:\app\tools\python27\lib\site-packages\pyorient\messages\base.py", line
265, in fetch_response
self._decode_all()
File "C:\app\tools\python27\lib\site-packages\pyorient\messages\base.py", line
249, in _decode_all
self._decode_header()
File "C:\app\tools\python27\lib\site-packages\pyorient\messages\base.py", line
176, in _decode_header
serialized_exception = self._decode_field( FIELD_STRING )
File "C:\app\tools\python27\lib\site-packages\pyorient\messages\base.py", line
366, in _decode_field
_decoded_string = self._orientSocket.read( _len )
File "C:\app\tools\python27\lib\site-packages\pyorient\orient.py", line 164, i
n read
buf = bytearray(_len_to_read)
MemoryError
I also tried some ohter SQL Statements like:
client.query("SELECT subSystem FROM L1_Req",1)
I cant't get why this happends. Can you guys help me ?

Tuleap LDAP Subversion Browse Svn Tree Issue

I have enabled LDAP on tuleap. But when I go to subversion> Browse SVN tree, I get following error
An Exception Has Occurred
Python Traceback
Traceback (most recent call last): File
"/usr/share/viewvc/lib/viewvc.py", line 3814, in main
request.run_viewvc() File "/usr/share/viewvc/lib/viewvc.py", line 318, in run_viewvc
if not svnaccess.check_read_access(user.user_getname(), self.rootpath, self.where): File
"/usr/share/tuleap/src/www/../utils/svn/svnaccess.py", line 130, in
check_read_access
username = get_name_for_svn_access(svnrepo, username) File "/usr/share/tuleap/src/www/../utils/svn/svnaccess.py", line 119, in
get_name_for_svn_access
return codendildap.get_login_from_username(username) File "/usr/share/tuleap/src/www/../utils/svn/codendildap.py", line 60, in
get_login_from_username
return get_login_from_eduid(row['ldap_id']) File "/usr/share/tuleap/src/www/../utils/svn/codendildap.py", line 43, in
get_login_from_eduid
l = ldap_connect() File "/usr/share/tuleap/src/www/../utils/svn/codendildap.py", line 33, in
ldap_connect
l = ldap.initialize(server) File "/usr/lib64/python2.6/site-packages/ldap/functions.py", line 85, in
initialize
return LDAPObject(uri,trace_level,trace_file,trace_stack_limit) File "/usr/lib64/python2.6/site-packages/ldap/ldapobject.py", line
69, in __init__
self._l = ldap.functions._ldap_function_call(_ldap.initialize,uri) File
"/usr/lib64/python2.6/site-packages/ldap/functions.py", line 57, in
_ldap_function_call
result = func(*args,**kwargs) LDAPError:(0, 'Error')
$sys_ldap_server = 'X.X.X.X:xxx'; $sys_ldap_cn='cn'; $sys_ldap_people_dn='ou=Users,dc=xxxx,dc=org'; $sys_ldap_search_user='(|(uid=%words%)(cn=%words%))'; $sys_ldap_default_user_status='A'; $sys_ldap_svn_auth=1; $sys_ldap_daily_sync=1; $sys_ldap_user_management=1; $sys_ldap_grp_enabled = 1; $sys_ldap_grp_dn='ou=groups,dc=xxxx,dc=org'; $sys_ldap_grp_cn = 'cn'; $sys_ldap_grp_member='uniquemember';

The LDAP server configuration variable should be defined with ldap:// (or ldaps:// for SSL LDAP)

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