python3-day3(函数-返回值)

1.函数

• 函数式：将某功能代码封装到函数中，日后便无需重复编写，仅调用函数即可
• 面向对象：对函数进行分类和封装，让开发“更快更好更强...”

2.return返回值

import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr

"""
def mail():
    ret=True
    try:
        msg = MIMEText('邮件内容', 'plain', 'utf-8')
        msg['From'] = formataddr(["吴老师",'[e-mail]'])
        msg['To'] = formataddr(["willian",'@qq.com'])
        msg['Subject'] = "主题"

        server = smtplib.SMTP("smtp.126.com", 25)
        server.login("[e-mail]", "passwd")
        server.sendmail('[e-mail]', ['@qq.com',], msg.as_string())
        server.quit()
    except Exception:
        ret=False
    return ret

ret = mail()
if ret:
    print('发送成功')
else:
    print("发送失败")
"""

def show():
    print('a')
    if 1==2:
        return [11,22]
    print('b')

ret=show()
print(ret)