AttributeError: 'Session' object has no attribute 'exceptions'异常处理

admin123

2019 年 10 月 22 日

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**原因：** requests.Session()中无异常处理类
![image1.png](https://www.520315.xyz/usr/uploads/2023/03/4185233709.png)

改写：
注释下面这句后![image2.png](https://www.520315.xyz/usr/uploads/2023/03/736952693.png)

抛出异常语句则不会报错![image3.png](https://www.520315.xyz/usr/uploads/2023/03/2714159241.png)

想报错session可以采用下列该种方式

```python
class Request:
    #构造函数
    def __init__(self):
        self.requests = requests.Session()

def post_url(self,url, para, header='', t_out=3):
        """
        构造post请求
        :param url:
        :param data:
        :param t_out:
        :return:
        """
        # print('once:'+str(self.cookies))
        t = 0
        while t < max_retry:
            if t != 0:
                time.sleep(1)
            try:
                r = self.requests.post(url, data=para, timeout=4, headers=header)#, cookies=self.cookies)
            except requests.exceptions.Timeout as e:
                print("freebook连接超时....")
                # print(str(e))
                t += 1
            except requests.exceptions.ConnectionError as e:
                print("网络异常")
                # print(str(e))
                t += 1
            except requests.exceptions.HTTPError as e:
                print("返回了不成功的状态码")
                # print(str(e))
                t += 1
            except Exception as e:
                print("出现了意料之外的错误")
                print(str(e))
                t += 1
            else:
                t = max_retry + 1
        # self.cookies.update(r.cookies) # 保存cookie
        # print('twice:'+str(self.cookies))
        if t == max_retry:
            print("超过最大重试次数")
            return -1
        else:
            return r

#get请求
    def get_url(self,url, parameters={}, t_out=3):
        """
        :param url:     get请求的连接
        :param t_out:   超时时间，默认3秒
        :param parameters: 参数
        :return:        response
        """
        # print('onc:'+str(self.cookies))
        t = 0
        # print(max_retry)
        while t < max_retry:
            if t != 0:
            	print(t)
            	time.sleep(1)
            try:
                r = self.requests.get(url, params=parameters, timeout=t_out)#, cookies=self.cookies)
            except requests.exceptions.Timeout as e:
                print("连接超时....")
                # print(str(e))
                t += 1
            except requests.exceptions.ConnectionError as e:
                print("网络异常")
                # print(str(e))
                t += 1
            except requests.exceptions.HTTPError as e:
                print("返回了不成功的状态码")
                # print(str(e))
                t += 1
            except Exception as e:
                print("出现了意料之外的错误")
                print(str(e))
                t += 1
            else:
                t = max_retry + 1
        # self.cookies.update(r.cookies) # 保存cookie
        # print('twi:'+str(self.cookies))
        if t == max_retry:
            print("超过最大重试次数")
            return -1
        else:
            return r
```

创建Request对象调用相应的get或post方法即可！！！

最后修改：2023 年 03 月 19 日