用于自动对象验证和序列化的python库。
entities的Python项目详细描述
Entities是一个用于自动对象验证和序列化的Python库。 在需要定义良好的实体模型但不需要 特别需要一个存储后端或表单验证程序。它支持递归 以及非递归集合类型（list、set和dict）、嵌套实体和 引用字段。它可以自动验证、序列化、反序列化和 为任意复杂度的实体生成可哈希密钥。
用法
典型用法如下：
from entities import *
class Account(Entity):
id = IntegerField(group=PRIMARY) # this field is in primary key group
iban = IntegerField(group=SECONDARY) # this is in secondary key group
balance = FloatField(default=0.0)
class Name(Entity):
first_name = StringField(group=SECONDARY)
last_name = StringField(group=SECONDARY)
class Customer(Entity):
id = IntegerField(group=PRIMARY)
name = EntityField(Name, group=SECONDARY)
accounts = ListField(ReferenceField(Account), default=[])
# Create Account objects.
a_1 = Account(1, 111, 10.0) # __init__() recognize positional arguments
a_2 = Account(id=2, iban=222, balance=20.0) # as well as keyword arguments
# Generate hashable key using primary key.
print a_1.keyify() # prints '(1,)'
# Generate hashable key using secondary key.
print a_2.keyify(SECONDARY) # prints '(222,)'
# Create Customer object.
c = Customer(1, Name('eser', 'aygun'))
# Generate hashable key using primary key.
print c.keyify() # prints '(1,)'
# Generate hashable key using secondary key.
print c.keyify(SECONDARY) # prints '(('eser', 'aygun'),)'
# Try validating an invalid object.
c.accounts.append(123)
try:
c.validate() # fails
except ValidationError:
print 'accounts list is only for Account objects'
# Try validating a valid object.
c.accounts = [a_1, a_2]
c.validate() # succeeds
待办事项列表
- json序列化模块（应该很简单）
- bson序列化模块（用于MongoDB兼容性）
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