Error the deployment function in lambda with graphene module - aws-lambda

Question

error when executing the function in aws lambda, while locally there is no error.
When executing the code in AWS lambda this error arises, what I want is to be able to use graqpl to perform dynamodb queries and to use them.
Solution attempt: uninstall typing from the python virtual environment.
Error that occurs:
[ERROR] AttributeError: type object 'Callable' has no attribute '_abc_registry'
Traceback (most recent call last):
File "/var/lang/lib/python3.7/imp.py", line 234, in load_module
return load_source(name, filename, file)
File "/var/lang/lib/python3.7/imp.py", line 171, in load_source
module = _load(spec)
File "<frozen importlib._bootstrap>", line 696, in _load
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/var/task/patron4.py", line 7, in <module>
import graphene
File "/tmp/sls-py-req/graphene/__init__.py", line 3, in <module>
from .types import (
File "/tmp/sls-py-req/graphene/types/__init__.py", line 2, in <module>
from graphql import ResolveInfo
File "/tmp/sls-py-req/graphql/__init__.py", line 27, in <module>
from .graphql import graphql
File "/tmp/sls-py-req/graphql/graphql.py", line 1, in <module>
from .execution import ExecutionResult
File "/tmp/sls-py-req/graphql/execution/__init__.py", line 21, in <module>
from .executor import execute, subscribe
File "/tmp/sls-py-req/graphql/execution/executor.py", line 14, in <module>
from promise import Promise, promise_for_dict, is_thenable
File "/tmp/sls-py-req/promise/__init__.py", line 18, in <module>
from .promise import (
File "/tmp/sls-py-req/promise/promise.py", line 8, in <module>
from typing import (List, Any, Callable, Dict, Iterator, Optional, # flake8: noqa
File "/tmp/sls-py-req/typing.py", line 1357, in <module>
class Callable(extra=collections_abc.Callable, metaclass=CallableMeta):
File "/tmp/sls-py-req/typing.py",enter code here line 1005, in __new__
self._abc_registry = extra._abc_registry
Code used:
class User(Model):
class Meta:
table_name = 'patron2'
region = 'us-east-2'
host = 'https://dynamodb.us-east-2.amazonaws.com'
id = UnicodeAttribute(hash_key=True, null=False)
discipline = UnicodeAttribute(null=False)
class UserNode(PynamoObjectType):
class Meta:
model = User
interfaces = (graphene.Node,)
class Query(graphene.ObjectType):
users = graphene.List(UserNode)
def resolve_users(self, args, context, info):
return list(User.scan())
schema = graphene.Schema(query=Query)
def patrongrafico(event, context):
# fetch all todos from the database
try:
print("hola")
query = '''
users {
discipline
}
'''
results = schema.execute(query)
print(results)
except Exception as ex:
print(ex)
return {'statusCode': 200,
'body': json.dumps({'items': [dict(result) for result in results]})}

Answer 1

Since you're using the Serverless Framework in combination with the serverless-python-requirements plugin you should make sure, that slim packaging is off, as this interferes with some libraries. Essentially some libraries assume they're installed via a "real" package manager and in that case the directory layout and files look slightly different.
I was having this problem with the jsonschema package a few months ago and wrote about it in a blog post if you're interested (Full disclosure: this is the blog of my employer).
Essentially your serverless.yml as a custom section which you can use among other things to configure the plugins:
custom:
pythonRequirements:
slim: true
The slim true parameter effectively removes some information that shouldn't be necessary for most libraries, but some rely on it. For information on this parameter see the package's docs.
Try again with this configuration:
custom:
pythonRequirements:
slim: false

Answer 2

The solution to the error is to remove the version of Python 3.7 and implement 3.6, since Graphene does not support versions greater than 3.6.