Can't use etcd3 package?

[steve-solun]

I have installed etcd3:

etcd3==0.12.0
  - grpcio [required: >=1.27.1, installed: 1.49.1]
    - six [required: >=1.5.2, installed: 1.16.0]
  - protobuf [required: >=3.6.1, installed: 4.21.7]
  - six [required: >=1.12.0, installed: 1.16.0]
  - tenacity [required: >=6.1.0, installed: 8.1.0]

trying to import:

import etcd3

Getting the following error:

TypeError                                 Traceback (most recent call last)
Cell In [7], line 1
----> 1 import etcd3

File ~/.local/share/virtualenvs/actionstore-workflow-fuzzy-slot-filling-BxsXSO6K/lib/python3.8/site-packages/etcd3/__init__.py:3
      1 from __future__ import absolute_import
----> 3 import etcd3.etcdrpc as etcdrpc
      4 from etcd3.client import Etcd3Client
      5 from etcd3.client import Transactions

File ~/.local/share/virtualenvs/actionstore-workflow-fuzzy-slot-filling-BxsXSO6K/lib/python3.8/site-packages/etcd3/etcdrpc/__init__.py:1
----> 1 from .rpc_pb2 import *
      2 from .rpc_pb2_grpc import *

File ~/.local/share/virtualenvs/actionstore-workflow-fuzzy-slot-filling-BxsXSO6K/lib/python3.8/site-packages/etcd3/etcdrpc/rpc_pb2.py:16
     11 # @@protoc_insertion_point(imports)
     13 _sym_db = _symbol_database.Default()
---> 16 from etcd3.etcdrpc import kv_pb2 as kv__pb2
     17 from etcd3.etcdrpc import auth_pb2 as auth__pb2
     20 DESCRIPTOR = _descriptor.FileDescriptor(
     21   name='rpc.proto',
     22   package='etcdserverpb',
   (...)
     26   ,
     27   dependencies=[kv__pb2.DESCRIPTOR,auth__pb2.DESCRIPTOR,])

File ~/.local/share/virtualenvs/actionstore-workflow-fuzzy-slot-filling-BxsXSO6K/lib/python3.8/site-packages/etcd3/etcdrpc/kv_pb2.py:33
     12 _sym_db = _symbol_database.Default()
     17 DESCRIPTOR = _descriptor.FileDescriptor(
     18   name='kv.proto',
     19   package='mvccpb',
   (...)
     22   serialized_pb=_b('\n\x08kv.proto\x12\x06mvccpb\"u\n\x08KeyValue\x12\x0b\n\x03key\x18\x01 \x01(\x0c\x12\x17\n\x0f\x63reate_revision\x18\x02 \x01(\x03\x12\x14\n\x0cmod_revision\x18\x03 \x01(\x03\x12\x0f\n\x07version\x18\x04 \x01(\x03\x12\r\n\x05value\x18\x05 \x01(\x0c\x12\r\n\x05lease\x18\x06 \x01(\x03\"\x91\x01\n\x05\x45vent\x12%\n\x04type\x18\x01 \x01(\x0e\x32\x17.mvccpb.Event.EventType\x12\x1c\n\x02kv\x18\x02 \x01(\x0b\x32\x10.mvccpb.KeyValue\x12!\n\x07prev_kv\x18\x03 \x01(\x0b\x32\x10.mvccpb.KeyValue\" \n\tEventType\x12\x07\n\x03PUT\x10\x00\x12\n\n\x06\x44\x45LETE\x10\x01\x42\x18\n\x14\x63om.coreos.jetcd.apiP\x01\x62\x06proto3')
     23 )
     27 _EVENT_EVENTTYPE = _descriptor.EnumDescriptor(
     28   name='EventType',
     29   full_name='mvccpb.Event.EventType',
     30   filename=None,
     31   file=DESCRIPTOR,
     32   values=[
---> 33     _descriptor.EnumValueDescriptor(
     34       name='PUT', index=0, number=0,
     35       serialized_options=None,
     36       type=None),
     37     _descriptor.EnumValueDescriptor(
     38       name='DELETE', index=1, number=1,
     39       serialized_options=None,
     40       type=None),
     41   ],
     42   containing_type=None,
     43   serialized_options=None,
     44   serialized_start=253,
     45   serialized_end=285,
     46 )
     47 _sym_db.RegisterEnumDescriptor(_EVENT_EVENTTYPE)
     50 _KEYVALUE = _descriptor.Descriptor(
     51   name='KeyValue',
     52   full_name='mvccpb.KeyValue',
   (...)
    112   serialized_end=137,
    113 )

File ~/.local/share/virtualenvs/actionstore-workflow-fuzzy-slot-filling-BxsXSO6K/lib/python3.8/site-packages/google/protobuf/descriptor.py:755, in EnumValueDescriptor.__new__(cls, name, index, number, type, options, serialized_options, create_key)
    752 def __new__(cls, name, index, number,
    753             type=None,  # pylint: disable=redefined-builtin
    754             options=None, serialized_options=None, create_key=None):
--> 755   _message.Message._CheckCalledFromGeneratedFile()
    756   # There is no way we can build a complete EnumValueDescriptor with the
    757   # given parameters (the name of the Enum is not known, for example).
    758   # Fortunately generated files just pass it to the EnumDescriptor()
    759   # constructor, which will ignore it, so returning None is good enough.
    760   return None

TypeError: Descriptors cannot not be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:
 1. Downgrade the protobuf package to 3.20.x or lower.
 2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).

More information: https://developers.google.com/protocol-buffers/docs/news/2022-05-06#python-updates

[steve-solun]

@kragniz @jd @pjz @jeckersb @funkyHat can you please assist?

[rochacbruno]

Just got the same error

[rochacbruno]

You can fix the problem by doing

pip install protobuf==3.18.3

[rochacbruno]

looks like protobuf broke compatibility on 4+

[steve-solun]

@rochacbruno yep solved it with protobuf==3.20.3

[SamuelMarks]

Any plans to fix this in the pip installer?