利用Factory-boy来生成实例数据

库和版本：
Faker==2.0.0
factory-boy==2.12.0

官方文档：
https://factoryboy.readthedocs.io/en/latest/index.html

1. 新建两个object：User和School

user.py

 class User():
     def __init__(self, name, num, age, school, city, phone):
         self.name, self.num, self.age, self.school, self.city, self.phone = \
             name, num, age, school, city, phone

school.py

 class School:
     def __init__(self,schoolName):
         self.schoolName=schoolName

2. 给对象创建factory

 import factory
 import factory.fuzzy
 from demo_factory_boy.fbobject.user import User
 from demo_factory_boy.fbobject.school import School
 from demo_factory_boy.fbprivader.numpv import NumProvider

 factory.Faker.add_provider(NumProvider)  #添加自定义的NumProvider

 class SchoolFactory(factory.Factory):
     class Meta:
         model = School

     schoolName = factory.sequence(lambda n: 'school%04d' % n)#factory.sequence

 class UserFactory(factory.Factory):
     class Meta:
         model = User

     name = factory.Faker("name", locale="zh_CN")#factory.Faker
     num = factory.Faker("num")
     age = factory.fuzzy.FuzzyInteger(42)#factory.fuzzy.FuzzyInteger
     city = factory.Faker("address", locale="zh_CN")
     phone = factory.fuzzy.FuzzyText("", 7, "", "")#factory.fuzzy.FuzzyText
     school = factory.SubFactory(SchoolFactory)#factory.SubFactory

     class Params:
         shipped = factory.Trait(
             name=None
         )

3.编写自定义Provider（如果没有Provider需求，可以跳过这个步骤）

 from faker import Faker
 from faker.providers import BaseProvider
 import random

 fake = Faker()

 class NumProvider(BaseProvider):
     def num(self):
         ri = self.randomInt()
         return str(ri())

     def randomInt(self):
         return lambda a=1,b=30:random.randint(a,b)

     def randomStr18(self,num):
         ri = lambda a=0, b=9: random.randint(a, b)
         s = ''
         for i in range(18):
             s = s + str(ri())
         return s

4.使用

 import factory
 from demo_factory_boy.fbfactory.userfc import UserFactory

 if __name__ == "__main__":
     # 单个生成
     seq = []
     uf = UserFactory()
     print(uf.__dict__)
     seq.append(uf.__dict__)
     seq.append(UserFactory().__dict__)
     print(seq)

     ##批量生成
     list = []
     fss = factory.build_batch(UserFactory, 4)
     for fs in fss:
         list.append(fs.__dict__)
     print(list)
     ##部分字段修改
     uff = UserFactory(shipped=True)
     print(uff.school.__dict__)
     print(uff.__dict__)
     print(uff.__dir__())

结果：