Attribute error: 'list' object has no attribute 'items'
See original GitHub issueExample
main.py
import json
from dataclasses import dataclass, field
from dataclasses_json import dataclass_json, config
from typing import List, Dict, Any
@dataclass_json
@dataclass
class Coef:
val: float = field(default=float, metadata=config(field_name="C"))
cf_type: float = field(default=int, metadata=config(field_name="G"))
total: float = field(default=float, metadata=config(field_name="T"))
@dataclass_json
@dataclass
class QuarterCoefs:
coefs: List[Coef] = field(default_factory=list,
metadata=config(field_name="E"))
num: str = field(default="", metadata=config(field_name="PN"))
@dataclass_json
@dataclass
class Game:
quarter_coefs: QuarterCoefs = field(default_factory=list,
metadata=config(field_name="SG"))
with open('test.json', 'r') as f:
match = json.load(f)
game_json = json.dumps(match)
m = Game.from_json(game_json)
print(m)
test.json
{
"SG": [{
"E": [{
"C": 1.71,
"G": 1,
"T": 1
},
{
"C": 9,
"G": 1,
"T": 2
},
{
"C": 2.4,
"G": 1,
"T": 3
}
],
"PN": "2 Quarter"
}]
}
Error
raceback (most recent call last):
File "/Users/peq/code/vk/bball_bot/test.py", line 35, in <module>
m = Game.from_json(game_json)
File "/usr/local/lib/python3.7/site-packages/dataclasses_json/api.py", line 110, in from_json
return cls.from_dict(kvs, infer_missing=infer_missing)
File "/usr/local/lib/python3.7/site-packages/dataclasses_json/api.py", line 117, in from_dict
return _decode_dataclass(cls, kvs, infer_missing)
File "/usr/local/lib/python3.7/site-packages/dataclasses_json/core.py", line 166, in _decode_dataclass
infer_missing)
File "/usr/local/lib/python3.7/site-packages/dataclasses_json/core.py", line 109, in _decode_dataclass
kvs = {decode_names.get(k, k): v for k, v in kvs.items()}
AttributeError: 'list' object has no attribute 'items'
What I’m doing wrong?
Issue Analytics
- State:
- Created 4 years ago
- Comments:8 (5 by maintainers)
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When I get stuck on something like this I create the object and then serialize it to make sure I have all the [{}] in the right places. In this case it looks like you are missing one set of {}.
game = Game(QuarterCoefs([Coef(1.71, 1, 1), Coef(9, 1, 2), Coef(2.4, 1, 3)], “2 Quarters”)) print(Game.to_json(game, indent=2))
{ “SG”: { “E”: [ { “C”: 1.71, “G”: 1, “T”: 1 }, { “C”: 9, “G”: 1, “T”: 2 }, { “C”: 2.4, “G”: 1, “T”: 3 } ], “PN”: “2 Quarters” } }
On Fri, Aug 23, 2019 at 9:27 AM Maxim Lyubiev notifications@github.com wrote:
– Nathan Atkins 720.346.8292 atkinsnw@gmail.com linkedin.com/in/nathan-atkins
Maxim,
Sorry for looking at the backwards yesterday. I think this does what you want. If not ping me back. Note that last pass at it uses the Marshmallow Schema and actually gets the coef’s as floats. I’m not sure if you are trying to use the default=float to handle missing values in some way, but if I drop one of those fields it blows up. If you need to handle missing values let me know and I can see if I can figure that out.
import json
from dataclasses import dataclass, field
from dataclasses_json import dataclass_json, config
from typing import List, Dict, Any
@dataclass_json
@dataclass
class Coef:
@dataclass_json
@dataclass
class QuarterCoefs:
@dataclass_json
@dataclass
class Game:
field(metadata=config(field_name=“SG”))
target = {
2.4, “G”: 1, “T”: 3}], “PN”: “2 Quarter”} ]
}
if name == “main”:
1, 3)], “2 Quarter”)])
all the coef’s are floats
{“SG”: [{“E”: [{“C”: 1.71, “G”: 1, “T”: 1}, {“C”: 9, “G”: 1, “T”: 2}, {“C”: 2.4, “G”: 1, “T”: 3}], “PN”: “2 Quarter”}]}
{“SG”: [{“E”: [{“C”: 1.71, “G”: 1, “T”: 1}, {“C”: 9, “G”: 1, “T”: 2}, {“C”: 2.4, “G”: 1, “T”: 3}], “PN”: “2 Quarter”}]}
{“SG”: [{“E”: [{“C”: 1.71, “T”: 1.0, “G”: 1.0}, {“C”: 9.0, “T”: 2.0, “G”: 1.0}, {“C”: 2.4, “T”: 3.0, “G”: 1.0}], “PN”: “2 Quarter”}]}
On Fri, Aug 23, 2019 at 12:23 PM Nathan Atkins atkinsnw@gmail.com wrote:
– Nathan Atkins 720.346.8292 atkinsnw@gmail.com linkedin.com/in/nathan-atkins