版本信息：
Faker==3.0.0
factory-boy==2.12.0

provider：

# encoding=utf-8

import random
from faker.providers import BaseProvider

class NumProvider(BaseProvider):
    def num(self):
        # ri = self.randomInt()
        # return str(ri())
        return '123aaaaa'

    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

# encoding=utf-

import factory

from factory import fuzzy

from NumProvider import NumProvider

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

class School:

    def __init__(self, schoolName):

        self.schoolName = schoolName

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

    # schoolName = factory.Faker._get_faker().random_int() #调用生成好的provider

    schoolName = factory.Faker('num').generate() #调用生成好的provider

class UserFactory(factory.Factory):

    class Meta:

        model = User

    name = factory.Faker("name", locale="zh_CN")  # factory.Faker

    num = factory.Faker("num") #调用生成好的provider

    age = factory.fuzzy.FuzzyInteger()  # factory.fuzzy.FuzzyInteger

    city = factory.Faker("address", locale="zh_CN")

    phone = factory.fuzzy.FuzzyText("", , "", "")  # factory.fuzzy.FuzzyText

    school = factory.SubFactory(SchoolFactory)  # factory.SubFactory

    class Params:

        shipped = factory.Trait(

            name=None

        )

if __name__ == "__main__":

    # 单个生成

    # seq = []

    # seq2=[]

    # uf = UserFactory()

    # # print(uf.__dict__)

    # seq.append(uf.__dict__)

    # seq2.append(UserFactory().__dict__)

    # print(seq)

    # print(seq2)

    # ##批量生成

    # list = []

    # fss = factory.build_batch(UserFactory, )

    # for fs in fss:

    #     list.append(fs.__dict__)

    # print(list)

    ##部分字段修改

    # uff = UserFactory(shipped=True)

    uff = UserFactory(shipped=False)

    print(uff.school.__dict__)

    print(uff.__dict__)

    print(uff.__dir__())