optimize: get name / value from sqlalchemy Enum column

If there's a Enum type column in the sqlalchemy object， which can not be json serialized, so extract it's name and value in to_primitive function.

fix: ignore all possible sqlalchemy query object

If there's an attribute, which type is an SQLAlchemy query object, then ignore it, and return None. Because this type of object is too complicated, may cause memery overflow, and in general, user don't really want to convert it, but a data record instead.

Try catch exceptions

fix: try catch Exception, and exclude SqlAlchemy BaseQuery object

Try catch exceptions

fix: try catch Exception, and exclude SqlAlchemy BaseQuery object

fix: ignore function and method on to_primitive

If an object is a function, or a method of a class, it will be ignored on coverting to primitive data structures. ( Use inspect module internal, callable is not good checker, for an instance of a class is also callable.)

fix import error

0.51

import in __init__

version 0.5.1

version 0.5.1

first release

0.5

add setup