10.7. 互联网访问
有许多模块可用于访问互联网和处理互联网协议。其中两个最简单的 urllib.request
用于从URL检索数据,以及 smtplib
用于发送邮件:
- >>> from urllib.request import urlopen
- >>> with urlopen('http://tycho.usno.navy.mil/cgi-bin/timer.pl') as response:
- ... for line in response:
- ... line = line.decode('utf-8') # Decoding the binary data to text.
- ... if 'EST' in line or 'EDT' in line: # look for Eastern Time
- ... print(line)
- <BR>Nov. 25, 09:43:32 PM EST
- >>> import smtplib
- >>> server = smtplib.SMTP('localhost')
- >>> server.sendmail('soothsayer@example.org', 'jcaesar@example.org',
- ... """To: jcaesar@example.org
- ... From: soothsayer@example.org
- ...
- ... Beware the Ides of March.
- ... """)
- >>> server.quit()
(请注意,第二个示例需要在localhost上运行的邮件服务器。)