Easy way to unmarshall/dump objects to Json? #298
Description
Sorry if I missed it, but could not find it in the documentation or after playing around.
Basically I am trying to get the raw json dump of objects like Tables or TableList, but via the API we are getting many composed objects that need to be unmarshalled manually one by one.
For example: what would be a way to dump into json a TableList? Thanks!
from google.cloud import bigquery
import json
client = bigquery.Client()
for d in client.list_datasets():
for t in client.list_tables(d.reference):
print(t)
print(repr(t))
print(dir(t))
print(t.table_id)
print(json.dumps(t))
<google.cloud.bigquery.table.TableListItem object at 0x7f02c30b0760>
<google.cloud.bigquery.table.TableListItem object at 0x7f02c30b0760>
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_properties', 'clustering_fields', 'created', 'dataset_id', 'expires', 'friendly_name', 'from_string', 'full_table_id', 'labels', 'partition_expiration', 'partitioning_type', 'project', 'reference', 'table_id', 'table_type', 'time_partitioning', 'to_bqstorage', 'view_use_legacy_sql']
arr
Traceback (most recent call last):
File "<stdin>", line 7, in <module>
File "/usr/lib/python3.8/json/__init__.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/usr/lib/python3.8/json/encoder.py", line 179, in default
raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type TableListItem is not JSON serializable
-->
{"created":"2020-10-05T01:43:40.077Z","dataset_id":"d","description":null, ...}