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name = "head first python"def what_happens_here(): print(name) 1 name = "python" 2 name = name + "is a great book!" print(name)what_happens_here()prin 阅读全文
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正则，正则，神奇的正则啊，正则之神，你好，你厉害， python正则匹配IP， ('9.145.132.2', '132.', '132', '2') 正则匹配邮箱 正则匹配URL filter函数： nums=range(2,20)for i in nums: nums=filter(lambda 阅读全文
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select media_name.name,media_hot.hot from media_name inner join media_hot on media_hot.id=media_name.id order by hot desc 根据media_hot表中id,hot项的Hot倒序输出 阅读全文