一、通过txt文件引入用户名密码
 1 #coding=utf-8

 from selenium import webdriver

 #from selenium.common.exceptions import NosuchElementException

 import unittest,os,time

 source=open("F:\\script\\py_scripts\\login_parameter\\username.txt","r")#用户名文件

 un = source.read()#读取用户名

 source.close()

 source2=open("F:\\script\\py_scripts\\login_parameter\\password.txt","r")#用户名文件

 pw = source2.read()#读取用户名

 source2.close()

 def login():

     #driver=self.driver

     #driver.maximize_window()

     driver.find_element_by_id("username").clear()

     driver.find_element_by_id("username").send_keys(un)

     print(un)

     driver.find_element_by_id("password").clear()

     driver.find_element_by_id("password").send_keys(pw)

     print(pw)

     driver.find_element_by_id("loginbtn").click()

     time.sleep(3)

 driver=webdriver.Chrome()

 driver.get("http://cloud.pingnanlearning.com/test/login/index.php")

 login()

二、通过字典引入用户名密码 
login_parameter.py
1 #coding=utf-8

 from selenium import webdriver

 #from selenium.common.exceptions import NosuchElementException

 import unittest,os,time

 import userinfo

 '''

 source=open("F:\\script\\py_scripts\\login_parameter\\username.txt","r")#用户名文件

 un = source.read()#读取用户名

 source.close()

 source2=open("F:\\script\\py_scripts\\login_parameter\\password.txt","r")#用户名文件

 pw = source2.read()#读取用户名

 source2.close()

 '''

 def login(un,pw):

     driver.find_element_by_id("username").clear()

     driver.find_element_by_id("username").send_keys(un)

     print(un)

     driver.find_element_by_id("password").clear()

     driver.find_element_by_id("password").send_keys(pw)

     print(pw)

     driver.find_element_by_id("loginbtn").click()

     time.sleep(3)

 info=userinfo.zidian()

 for un,pw in info.items():

     driver=webdriver.Chrome()

     driver.get("http://cloud.pingnanlearning.com/test/login/index.php")

     login(un,pw)

 #userinfo.py

 def zidian():

     data={'candy':'','candy1':''}

     print("success reader username and password!")

     return data