函数
def sendmail(xo,zt,nr='ok'): #默认函数 ：默认函数一定要放在最后面
try:
import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr
msg = MIMEText('nr', 'plain', 'utf-8')
msg['From'] = formataddr(["武沛齐", '13262209921@139.com'])
msg['To'] = formataddr(["走人", 'xo'])
msg['Subject'] = "zt"
server = smtplib.SMTP("smtp.139.com", 25)
server.login("13262209921@139.com", "520122817")
server.sendmail('13262209921@139.com', ['xo', ], msg.as_string())
server.quit()
except:
return "失败"
else:
return "cc"
#set = sendmail('13262209921@139.com','nihao',123456789) 普通函数
#set = sendmail('676989649@qq.com','nihao',123456789)
#sendmail(zt = 123456789, nr = 'nihao') 指定函数
# 判断 成功好失败
while True:
em = input('输入邮箱地址：')
abc = sendmail(em,'shuaige','ok') 普通函数
if abc == "cc":
print('发送成功')
else:
print('发送失败')
动态参数和万能参数
字符串
def fi(*args):
print(args)
abc = 'ass',123
fi(*li) 加*把结果传进去
fi(li)
列表
li = ['as', 123]
fi(*abc)
fi(abc)
def fl(**args):
print(args, type(args))
字典
def fl(*abc,**args):
print(abc,args)
dic = {'k1':'v1','k2':'v2'}
fl(**dic)
fl(n1='alex', n2=18)
格式化字符串1
a = ['hhh',456]
b = {'asd00':123,'name':'hanwei'}
fl(*a,**b)
sl = 'i am {name},age {age}'.format(name='alex',age=18)
print(sl)
格式化字符串2
dic = {'name':'alex','age':18}
s2 = 'i am {name},age {age}'.format(**dic)
print(s2)
1.函数引用变量是连接引用
2.全局变量
均可读
腻值 如 globalNAME
字典，列表 可修改 不可腻值
全局变量用大写
练习
def login(username,password):
#打开文件验证用户名和密码
#return为True 成功
#return为Fslse 失败
f = open('db','r')
for line in f:
line_list = line.strip().split('|')
if line_list[0] == username and line_list[1] == password:
return True
return False
def abc(usernam,passwor):
#把注册的用户和密码写入到文件
with open('db','a')as w:
wh = ' '+usernam+'|'+passwor
w.write(wh)
w.close()
return True
def main():
#判读登录和注册
#把用户和密码传给函数
#判断还是否成功
t = input ('1.登录 2.注册:')
if t == '1':
user = input('输入用户名:')
pwd = input('输入密码:')
r = login(user,pwd)
if r == True:
print('登录成功')
else:
print ('登录失败')
elif t == '2':
user1 = input('输入用户名:')
pwd2 = input('输入密码:')
M = len(pwd2)
if M > 8:
abc(user1,pwd2)
print('成功注册%s' %user1)
else:
print('密码太短')
main()