Python+selenium自動循環發郵件

Python源代碼以下:

# coding=utf-8
from selenium import webdriver
from time import sleep
from random import randint


def auto_throw(target_mail, username, password):
    """自動循環發郵件"""
    driver = webdriver.Chrome()
    driver.get("https://mail.qq.com")
    driver.set_window_size(1100, 580)         # 設置窗口大小
    sleep(1)
    # 切換iframe表單
    driver.switch_to.frame("login_frame")
    driver.find_element_by_xpath('//*[@id="u"]').send_keys(username)       # 用戶名
    driver.find_element_by_xpath('//*[@id="p"]').send_keys(password)       # 密碼
    driver.find_element_by_xpath('//*[@id="login_button"]').click()        # 登陸
    sleep(1)
    # 將表單切回到最外層
    driver.switch_to.default_content()
    sleep(2)
    m = 0
    while True:
        try:
            m += 1
            driver.switch_to.default_content()
            driver.find_element_by_xpath('//*[@id="composebtn"]').click()      # 寫信
            sleep(1)
            driver.switch_to.frame("mainFrame")
            # driver.find_element_by_xpath('//div[@title="陌生人"]/a').click()      # 好友分組
            driver.find_element_by_xpath('//a[@title="%s"]'%target_mail).click()    # 選擇好友
            sleep(1)
            driver.find_element_by_xpath('//input[@title="主題是一封郵件的標題，可不填。"]').send_keys(
                "第%d封郵件發送成功! 隨機代號爲%d!"%(m, randint(100000,1000000)))      # 主題
            driver.find_element_by_xpath('//a[@name="sendbtn"]').click()        # 發送
            print("第%d封郵件發送成功!"%m)
            sleep(1)
        except:
            print("發送失敗!")
            sleep(1)


if __name__ == '__main__':
    print("--------自動循環發郵件腳本--------")
    target_mail = input("請輸入對方郵箱:")
    username = input("輸入你的QQ郵箱用戶名:")
    password = input("輸入你的QQ郵箱登陸密碼:")
    auto_throw(target_mail, username, password)