python中的__call__函数

概述简单实例： class TmpTest: def __init__(self, x, y): self.x = x self.y = y def __call__(self, x, y): self.x, self.y = x, ya = TmpTest(1, 2)a(4, 5)print(a.x,

简单实例：

class TmpTest:    def __init__(self,x,y):        self.x = x        self.y = y    def __call__(self,y):        self.x,self.y = x,ya = TmpTest(1,2)a(4,5)print(a.x,a.y)4 5

实战中应用：

import Jsonimport requestsfrom common.RecordLog import logclass httpRequests(object):    def __init__(self):        self.session = requests.Session()        log.info(‘建立请求...‘)    def send_request(self,method,url,params_type=‘form‘,data=None,**kwargs):        method = method.upper()        params_type = params_type.upper()        if isinstance(data,str):            try:                data = Json.loads(data)            except Exception:                    data = eval(data)        if ‘GET‘ == method:            response = self.session.request(method=method,url=url,params=data,**kwargs)        elif ‘POST‘ == method:            if params_type == ‘FORM‘:                log.info("开始发送{}请求，URL为：{}，请求数据为:{}".format(method,data))                response = self.session.request(method=method,data=data,**kwargs)            elif params_type == ‘JsON‘:                response = self.session.request(method=method,Json=data,**kwargs)            else:                response = self.session.request(method=method,**kwargs)        else:            log.error("请求方法错误：request method ‘{}‘ error ! please check".format(method))            raise ValueError(‘request method "{}" error ! please check‘.format(method))        return response    def __call__(self,**kwargs):        return self.send_request(method,params_type=params_type,data=data,**kwargs)    def close_session(self):        self.session.close()        try:            log.info(‘关闭请求...‘)            del self.session.cookies[‘JsESSIONID‘]        except Exception:            passrequest = httpRequests()

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