组织常量的最 Pythonic 方式是什么？

Question

I use marshmallow and have a series of object serialization. Because of technical reasons, the names of the field and class can be the same.

For example,

class Sample(Schema):
    SampleField = fields.Nested(SampleField)

class SampleField(Schema):
   # Some other fields

When I need to reference SampleField as a string in the code. I create constant and name it SAMPLE_FIELD = SampleField . Often I need to have the same constant in both places in the definition class and where it is used as a field.

How to organize it the way, it will not become messy?

Answer 1

The marshmallow field does not have to be named after the field name in serialiazed data.

Would this solve your problem?

class SampleSchema(Schema):
    sample_field = fields.Nested(SampleFieldSchema, data_key='SampleField')

class SampleFieldSchema(Schema):
   # Some other fields