gaoran10 opened a new issue #11473:
URL: https://github.com/apache/pulsar/issues/11473
**Describe the bug**
The Python client couldn't encode a struct schema object which has None
fields.
**To Reproduce**
Steps to reproduce the behavior:
```
class User(Record):
name = String()
age = Integer()
user = User(name = 'jack', age = 18)
data1 = schema.encode(user) // this could work well
user2 = User(age = 20)
data2 = schema.encode(user2) // encounter error
```
**error log**
```
user: {'_required_default': False, '_default': None, '_required': False,
'name': 'jack', 'age': 18}
decodeUser: {'_required_default': False, '_default': None, '_required':
False, 'name': 'jack', 'age': 18}
user2: {'_required_default': False, '_default': None, '_required': False,
'name': None, 'age': 20}
Traceback (most recent call last):
File
"/Volumes/shit/Workspaces/GitHubFork/pulsar/pulsar-client-cpp/python/schema_test.py",
line 992, in <module>
test.test()
File
"/Volumes/shit/Workspaces/GitHubFork/pulsar/pulsar-client-cpp/python/schema_test.py",
line 985, in test
decodeUser2 = schema.decode(data2)
File
"/Volumes/shit/Workspaces/GitHubFork/pulsar/pulsar-client-cpp/python/pulsar/schema/schema_avro.py",
line 64, in decode
return self._record_cls(**d)
File
"/Volumes/shit/Workspaces/GitHubFork/pulsar/pulsar-client-cpp/python/pulsar/schema/definition.py",
line 74, in __init__
self.__setattr__(k, kwargs[k])
File
"/Volumes/shit/Workspaces/GitHubFork/pulsar/pulsar-client-cpp/python/pulsar/schema/definition.py",
line 117, in __setattr__
value = field.validate_type(key, value)
File
"/Volumes/shit/Workspaces/GitHubFork/pulsar/pulsar-client-cpp/python/pulsar/schema/definition.py",
line 290, in validate_type
raise TypeError("Invalid type '%s' for field '%s'. Expected a string" %
(t, name))
TypeError: Invalid type '<class 'NoneType'>' for field 'name'. Expected a
string
```
**Expected behavior**
Encode and decode operations should work well.
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