Pydantic库validator的per参数如何控制校验方法的执行顺序？

from pydantic import BaseModel, ValidationError, validatorclass UserModel(BaseModel):    name: str    username: str    password1:str    password2: str    @validator(</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">username</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)    </span><span style="color: rgba(0, 0, 255, 1)">def</span><span style="color: rgba(0, 0, 0, 1)"> username_alphanumeric(cls, v,values):        </span><span style="color: rgba(0, 0, 255, 1)">print</span>(values,<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">执行顺序优先</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)        </span><span style="color: rgba(0, 0, 255, 1)">assert</span> v.isalnum(), <span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">must be alphanumeric</span><span style="color: rgba(128, 0, 0, 1)">'</span>        <span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> v    @validator(</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">name</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)    </span><span style="color: rgba(0, 0, 255, 1)">def</span><span style="color: rgba(0, 0, 0, 1)"> name_must_contain_space(cls, v,values):        </span><span style="color: rgba(0, 0, 255, 1)">print</span>(values,<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">name</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)        </span><span style="color: rgba(0, 0, 255, 1)">if</span> <span style="color: rgba(128, 0, 0, 1)">'</span> <span style="color: rgba(128, 0, 0, 1)">'</span> <span style="color: rgba(0, 0, 255, 1)">not</span> <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> v:            </span><span style="color: rgba(0, 0, 255, 1)">raise</span> ValueError(<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">must contain a space</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)        </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> print(v.title())</span>        <span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> v.title()    @validator(</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">password2</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)    </span><span style="color: rgba(0, 0, 255, 1)">def</span><span style="color: rgba(0, 0, 0, 1)"> passwords_match(cls, v, values):        </span><span style="color: rgba(0, 0, 255, 1)">print</span>(values,<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">password2</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)        </span><span style="color: rgba(0, 0, 255, 1)">if</span> <span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">password1</span><span style="color: rgba(128, 0, 0, 1)">'</span> <span style="color: rgba(0, 0, 255, 1)">in</span> values <span style="color: rgba(0, 0, 255, 1)">and</span> v != values[<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">password1</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">]:            </span><span style="color: rgba(0, 0, 255, 1)">raise</span> ValueError(<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">passwords do not match</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)