You should not use HTTP request parameters as filenames
One corollary of the danger of over-powerful introspection is that you should not use HTTP requestparameters directly as filenames for any reason, not just to avoidhard-coding allowed commands in your web application. Any time that youuse a request parameter as a filename, you create an opportunity for anattacker to escape from whatever directory your application is supposedto get its files from and thus to rummage all over your system.
(In fact, you should not directly use the URL for a filename either,because someday
瘦虎肥龍爭霸戰‧四
星期五晚簡直無攪好訓, 一來全身發滾, 滴汗不出, 二來蜜柑和Ding Ding終於展開正面衝突,

現在才tip
覺得還是8號熊穎詩比較好。
樣貌方面,3、4都ok。
好馬不吃回頭草
心水清的讀者一定注意到,「printer」這個字已大半年沒有在小妹的專欄出現過。當我還在攬住個水泡深呼吸再閉氣,突然有人大喊一聲:「Party Time!」大夥兒就跑去開嘉年華。我呆呆
A gotcha with Python's new signal.siginterrupt()
Python 2.6 added a siginterrupt() function to the signal module , so that you can dealwith the EINTR problem . Unfortunately it doesn'tnecessarily do what you want, because of CPython signal handlersemantics .
(Ob-attribution: signal.siginterrupt() was brought to my attention bya commentator on the EINTR entry .)
What you probably want when you combine siginterrupt() and a signalhandler, and what a lot of people probably think that they are getting,is that when your program