from pydantic import BaseModel

class OperationData(BaseModel):
    id: str

class Operation(BaseModel):
    __root__: Tuple[int, OperationData]

data = [0, {'id': '1.11.0'}]
# this one works as expected
print(Operation.parse_obj(data))
# printed: __root__=(0, OperationData(id='1.11.0'))

# However, this one doesn't
print(parse_obj_as(Operation, data))
# Traceback (most recent call last):
#  File "/home/**removed**/protocol/base.py", line 238, in <module>
#    print(parse_obj_as(Operation, data))
#  File "pydantic/tools.py", line 35, in pydantic.tools.parse_obj_as
#  File "pydantic/main.py", line 283, in pydantic.main.BaseModel.__init__
# pydantic.error_wrappers.ValidationError: 1 validation error for ParsingModel[Operation]
#__root__
# value is not a valid dict (type=type_error.dict)

# Which is not a big problem. The problem is that I have nested class

class OperationsBatch(BaseModel):
    batch_desc: str
    operations: List[Operation]

# and it produces same exception on
print(OperationsBatch.parse_obj({'batch_desc': '123', 'operations': [data, data]}))

# Traceback (most recent call last):
# File "/home/**removed**/protocol/base.py", line 243, in <module>
#    OperationsBatch.parse_obj({'batch_desc': '123', 'operations': [data, data]})
#  File "pydantic/main.py", line 402, in pydantic.main.BaseModel.parse_obj
#  File "pydantic/main.py", line 283, in pydantic.main.BaseModel.__init__
# pydantic.error_wrappers.ValidationError: 2 validation errors for OperationsBatch
# operations -> 0
# value is not a valid dict (type=type_error.dict)
# operations -> 1
# value is not a valid dict (type=type_error.dict)