Zoltan Fedor created AVRO-1737:
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Summary: Python 3.4 - unhashable type: 'RecordSchema'
Key: AVRO-1737
URL: https://issues.apache.org/jira/browse/AVRO-1737
Project: Avro
Issue Type: Bug
Components: python
Affects Versions: 1.7.7
Environment: Python 3.4, avro 1.7.7
Reporter: Zoltan Fedor
Following the standard example from
http://avro.apache.org/docs/current/gettingstartedpython.html but adding a
dict.get() lookup using an avro.schema.RecordSchema object fails due to
"unhashable type: 'RecordSchema'"
This likely happens because the RecordSchema class overwrite the __eq__ method
but does NOT define a __hash__ method.
To reproduce run the following script in Python 3 (tested in Python 3.4.3):
import avro.schema
from avro.datafile import DataFileReader, DataFileWriter
from avro.io import DatumReader, DatumWriter
schema = avro.schema.Parse(open("users.avsc").read())
writer = DataFileWriter(open("users.avro", "wb"), DatumWriter(), schema)
writer.append({"name": "Alyssa", "favorite_number": 256})
writer.append({"name": "Ben", "favorite_number": 7, "favorite_color": "red"})
writer.close()
reader = DataFileReader(open("users.avro", "rb"), DatumReader())
for user in reader:
print(user)
reader.close()
# added to generate the error
test = {}
test.get(schema, -1)
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