Describe the bug
In several places https://github.com/apache/pulsar/blob/master/pulsar-client-cpp/python/pulsar/schema/definition.py uses incorrect type (name) to string conversions when exceptions are raised, for example:
https://github.com/apache/pulsar/blob/66e8206f129a7ea303099af1317f78652240f985/pulsar-client-cpp/python/pulsar/schema/definition.py#L29

To Reproduce

from pulsar.schema import Array, Integer
f = Array(Integer)

TypeError: can only concatenate str (not "type") to str

Expected behavior

Exception: Argument Integer is not a Record or a Field

Additional context
The same mistake was made in several places in that file.